Plot 2d Contour Online







To plot mathematical expressions is really easy:. Contour Plot can be installed on Windows XP/Vista/7/8/10 environment, 32-bit version. How to make graphs of polynomial functions, regions of inequalities. It can be used when the categories and series both are numeric. Display of 2D contour plots NUTS Help Display of 2D contour plots ** Change as of September, 2001: ** In previous versions, 2D display was a subroutine. They are mostly standard functions written as you might expect. Contour Plots •Contour plots are created using the • A color bar can be. , which got added as general new 2D plot annotation functionality in Maple 2017 and is available for the plots:-contourplot command via its contourlabels option. By default, contours are plotted with black lines. This plot is Figure 2 from Lu et al 2003, and shows their residue based "Protein-Protein Interaction Potential" between each of the twenty amino acids. Here we discuss How to Create Contour Plots in Excel along with. Contouring algorithms often use marching cube method (and its variations) to render a contour plot. I am trying to plot a contour map with the following data I have in 3 columns. …Come down here to 2D contour,…which is that one. Here we discuss How to Create Contour Plots in Excel along with. You will use plt. image2D extends R's. geom, stat: Use to override the default connection between geom_density_2d and stat_density_2d. Kernel density estimation is performed to generate a continuous approximation of the sample density. It's a scatterplot, but to fix the overplotting there are contour lines that are "heat" colored. ggplot2 can not draw true 3d surfaces, but you can use geom_contour and geom_tile() to visualise 3d surfaces in 2d. Go to Plot / Axis and toggle off Show X Axis and Show Y Axis. ESCI 386 - Scientific Programming, Analysis and Visualization with 2D Plots 1. A contour of a function f(x,y) of two variables is the set of points (x,y) where the function is constant. I need to digitize the 2D contour plots in the attached images and convert the digitized numbers to data with the color maps of each image. 2D Histogram Contour in Python How to make 2D Histogram Contour plots in Python with Plotly. By default, ContourPlot3D shows each contour level as an opaque white surface, with normals pointing outward. As illustrated by the graph to the right, you can combine any or all of these forms in a single graph window. In addition to a complete set of standard plotting routines including line, scatter, polar, and bar graphs, you can create advanced visualizations including line-contour and filled-contour plots, 2D histograms, vector arrow fields, streamline plots, and more. …Come here to the geometry, and let. Percentile. How to make graphs of polynomial functions, regions of inequalities. Pgfplots 2D plotting functionalities are vast, you can personalize your plots to look exactly what you want. The name of the contour plot is the same as the name of the Z wave containing the contour data. Scilab offers many ways to create and customize various types of 2D and 3D plots. Contour Chart is used to show the 3D surface area in the 2D top view using a different band of color. clevel is the contour level which we have computed previously, while xgrid and ygrid are the 2D axis data. SigmaPlot´s Graph Style Gallery: Save any graph with all graph properties and add a bitmap image to the gallery to create complex graphs Graph Toolbar: select toolbar icon of the graph type and style you want to create or to add additional curves to an existing graph. First, we will create an intensity image of the function and, second, we will use the 3D plotting capabilities of matplotlib to create a shaded surface plot. Postscript PDF SVG Veusz document. "Graphing Calculator is one of the best examples of elegant power and clean user interface of any application I've seen. Akin to contour lines on topographic maps, each contour boundary is an isoline of constant density. However, creating a contour plot is an instance in which I need to use the Graph Template Language (GTL). Plotting and graphing are methods of visualizing the behavior of mathematical functions. Generates a contour plot of a 2-column data set in which the 1st and 2nd column contains the X and Y variables, respectively. Contour plots are still fully interactive; double clicking the color bar will allow changing its properties, and double clicking the plot itself will allow the setting of plot properties and dataset/series properties. I'm sure I'm not the first person to come up with an algorithm like this, but here's the back-of-the-napkin idea that I'm thinking through:. Vertex Buffer Object Demos. A key showing how the colors map to z values is shown to the right of the plot. You can use contour plots, 3D scatterplots, and 3D surface plots in Minitab to view three variables in a single plot. Is this contour being computed by a C or Matlab program? Assuming you are using a C program to compute the coordinates of the contour you have a basic decision to make: either add graph-drawing capability to your program or export your data to a program you already have that is already good at drawing graphs. Each column represents an ordered pair. contour_plot. Open the 2D and Contour Graphs: Contour: XYZ Contour folder in the Project Explorer. If specified, overrides the default data frame defined at the top level of the plot. NOTE: I added later the Sqrt to the exponential; contour plots in Mathematica are in x and y coords, and you want to plot exp(-r/a), so you write r in Cartesians as Sqrt[x^2+y^2], but I forgot the Sqrt, sorry. Primitive class for the contour plot graphics type. With one vector input argument, plot a histogram of the values with 10 bins. go to Page 1: FComp; select "von mises stress" from the list (see Figure 14) click the Play button in the bottom panel (see Figure 15) click the Stop button in the bottom panel. Or pull down the Graphics menu. We will be using variables speed and dist from car data frame to draw. CONTOUR_GRADIENT_3D, a MATLAB program which shows how contours and gradient vectors for a function f(x,y) can be displayed in a 3D plot. A contour of a function f(x,y) of two variables is the set of points (x,y) where the function is constant. We use the contour function in Base R to produce contour plots that are well-suited for initial investigations into three dimensional data. If your data are regularly spaced, you do not need an interpolation procedure, you can directly plot a contour through a contour or a pcolor command. You can change which values the contour lines should display by tweaking the "Range of contour levels" and "Number of contour levels" sliders. Available with 3D Analyst license. In part 1, we focus on the three basic commands for doing this: CONTOUR, CONTOUR3, an. data A data frame. 3D Grapher with contour plot. To get the same figure orientation in MATLAB as in your Lumerical plots, you must apply an unconjugated transpose operation and adjust the axes, as shown below. It graphs two predictor variables X Y on the y-axis and a response variable Z as contours. ternary plot. Plot 2d graph in Excel. Part 1 of a two-part series on creating contour plots (maps) in MATLAB. Home Physics Tools Mathematical Tools 2D Functions Plotter Here is a 2D plotter to draw the graphs of functions. Alpha Squad 5 is now recruiting commanders. 3V at constant drain voltage Vd = 1. CONTOUR-Plot provides interactive buttons for rotating the viewing perspective, zooming, printing, and selecting other display options. Start a simple session with make ghci. Both quiver and contour require using meshgrid first. XYZScatter Select one or more groups of X,Y,Z columns and produce a 3D scatter plot, one data set per X,Y,Z group. I'm looking to plot individual vectors (not a field) for an equilibrium lab using some type of free online site or tool. but they are not in a spe. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum. Each contour line is shown in an X-Y plot and has a constant value on a third variable. I want to plot some data points (M_Coord_Plain. Real contour plots are created in Excel. ) • Text and Curve tools • Cutter/Printer support with over 5,000 direct drivers included • 250+ Clipart • Online Manual, Online FAQ, Knowledgebase plus more. …We're going. We also have a toolbar holding quick acess buttons. plot2d plots a set of 2D curves. To create a contour plot with both filled contours and outlines, first create the filled contour plot, then add the outline contours by calling CONTOUR a second time with the OVERPLOT keyword. Note that outline and fill contours cannot be drawn at the same time. Interactive map of RDR2 World for Red Dead Redemption 2 with locations, and descriptions for items, characters, easter eggs and other game content. I recently added a 3D Grapher on IntMath. Before getting started with your own dataset, you can check out an example. Trek is a NASA web-based portal for exploration of Mars. In cartography, the contour interval is the elevation difference between adjacent contour lines. charts - Plot 2d graph in Excel - Super User Creating 2D Contour Diagrams Perhaps this will make it clearer for you: Creating a Surface chart - Excel - Office. Plot svm objects Description. To visualise a function f(x, y) of two real variables we commonly use contour plots or surface plots (covered in the next topic). The following graphics primitives are supported: arrow() - an arrow from a min point to a max point. I have a file. Read "Algorithm 671: FARB-E-2D: fill area with bicubics on rectangles—a contour plot program, ACM Transactions on Mathematical Software (TOMS)" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Sometimes it is useful to display three-dimensional data in two dimensions using contours or color-coded regions. If specified, overrides the default data frame defined at the top level of the plot. This page shows how to use R to draw a table or matrix of numerical values as a contour plot with an overlayed grid, like the image below, and using level-plots as an alternative. The function will calculate the kernel density estimate and represent it as a contour plot or density plot. Optionally, draws a filled contour plot of the class regions. contour plot with 1D histograms by axes. A graph in 3 dimensions is written in general: z = f(x, y). Also, the X and Y boundaries of each contour plot are different in some cases. Use plots to visualize data. 2-D spectra are presented usually as a contour plot,. GitHub Gist: instantly share code, notes, and snippets. If specified, overrides the default data frame defined at the top level of the plot. Akin to contour lines on topographic maps, each contour boundary is an isoline of constant density. Selective laser melting (SLM) is an additive manufacturing (AM) technology that uses a high-power laser beam to melt metal powder in chamber of inert gas. See contour_plot? for help actually doing contour plots. Plot orientation. Let's say, I have my x and y data as column vectors. Author(s) David Lane. I want to plot the sphere function as a surface or a contour plot, and the position and fitness value of the best individual superimposed with it. Today I will try to show how to visualize Gradient Descent using Contour plot in Python. The new command is twoway contour. 3D Grapher with contour plot. The following graphics primitives are supported: arrow() - an arrow from a min point to a max point. What are Contour Plots? Contour plots (sometimes called Level Plots) are a way to show a three-dimensional surface on a two-dimensional plane. One can freely zoom and pan in a 2D contour plot, just as in a normal (one independent. Use least squares curve fit. Contour maps. How can I plot 2D contour and vector field Learn more about contour, velocity field, quiver, vector field, streamline, plot 2d, tangent field, oriented lines, curved contour with quiver. Two-Dimensional, Steady-State Conduction (Updated: 3/6/2018). Hi everyone, I hope this question is beyond "read the manual". basic question contour plot in paraview — CFD Online Discussion Forums. This is trivial in JMP and relatively straightforward (though less simple) in Excel (though its contour plots have a cheesy shading effect). Matplotlib's contour is based on a rectangular grid. Contour Chart is used to show the 3D surface area in the 2D top view using a different band of color. You can change which values the contour lines should display by tweaking the "Range of contour levels" and "Number of contour levels" sliders. Below is the corresponding surface chart. With this article, we begin a series that will take the reader through the nuances of 2D plotting with matplotlib. Here are 3 contour plots made using the seaborn python library. Contour Plot works with any contour. Emoji scatter plots. Tutorial for Mathematica & Wolfram Language. A Scatter Plot is useful to visualize the relationship between any two sets of data. Akin to contour lines on topographic maps, each contour boundary is an isoline of constant density. Hi to all, I have a data matrix with X,Y,Z and I'd like to create a dynamic plot window with: filled contours contours raw/image plot could someone suggest me the best approach? Using the new Qt Chart? VTK? Other? I was able to plot them using matplotli. For more information about the graphics available in PROC KDE, see the section ODS Graphics of Chapter 45, The KDE Procedure. See contour_plot? for help actually doing contour plots. Note that you can use the same argument as for a 1D density plot to custom your chart. 1) and PHP7. Examples of contour plots are below. Plotting a Surface from Scatter Data. Contour Plot For Excel. I have a simple problem in python and matplotlib. This program produces a filled contour plot of a function, labels the contours and provides some custom styling for their colours. The default color scheme is blue, orange, gray, yellow, blue. 6, respectively). The convex sets are each defined by an oracle/function that maximizes a linear functional/inequality and returns a maximizer (i. texture map 2D plot. Subsequent columns in the set are the (x, y) coordinates of the vertices. Office Tools downloads - Contour Plot by Office Expander and many more programs are available for instant and free download. How can I plot a 2D contour from data vectors?. Visual Data is a scientific data visualization application to create 3D surface, contour plot, vector field plot, 4d scatter plots, 4d slices, 4d vector plots and isosurfaces etc. Each column represents an ordered pair. We'll help you set the scene then build characters, describe them, name them, and work out how they fit together in an interesting story. Highlight Specific Contour Levels. Contour Plotting Contour plotting is available in both 2D and 3D graphs. For more information about the graphics available in PROC KDE, see the section ODS Graphics of Chapter 45, The KDE Procedure. contour requires a 2-D array Z that speci es function values on a grid. It provides a simple view of the conformation of a protein. dat" using 1 with lines, \ "glass. Vertex Buffer Object Demos. They control the drawing of level curves on a 3D plot. SphericalDensityPlot3D is a plotting routine, that makes a density plot on a spherical surface e. New to using TecPlot so I assume this will be rather easy to answer. Note that you can use the same argument as for a 1D density plot to custom your chart. Plotting a data set as a 2D coloured contour / 3D map Hello all, I've got a data set which consists of three variables. PLAXIS is used worldwide by top engineering companies and institutions in the civil and geotechnical engineering industry. A food scientist wants to determine the optimal time and temperature for heating a frozen dinner. Bokeh is powerful plotting tools using nodejs. The φ-ψ angles cluster into distinct regions in the Ramachandran plot where each region corresponds to a particular secondary structure. contour uses the layout function and so is restricted to a full page display. The plot contains a number of contour lines. Akin to contour lines on topographic maps, each contour boundary is an isoline of constant density. If you're working with images or 2D data, for example, you might also want to check out imshow() to show images. I am taking machine learning, and I have seen a few contour plots in the course. Despite what you. Prerequisites. We will be using variables speed and dist from car data frame to draw. 3D plot types include surface plots based on regular or irregular data, scatter plots, 3D lines, bars, and object plots, which allow primitive objects to be laid out in 3D. A contour plot is a graphical technique for representing a 3-dimensional surface by plotting constant z slices, called contours, on a 2-dimensional format. Learn more about contourf, line plot overlay, contour MATLAB The idea is for the above to overlay a 'background' coloured contour plot, on. title('Contour plot of f in longitude-latitude with coast lines') hold off; Plots using the Hammer projection Another common way to plot data on the sphere is using a Hammer projection of the sphere, which is a 2D projection developed by Ernst Hammer. Hello with gnuplot I need to have 2d contour plot from a file (say ss. for plotting some angular dependence of a function The usage is intuitively and very similar to a normal 2D-density plot and besides many other options there is also the possibilty to apply contours to the plot. It looks almost correct except for a slight misalignment of the 0,0 coordinates of both plots. GitHub Gist: instantly share code, notes, and snippets. I went for a contour plot but it needs the data sorted in rows and columns while my data consisted of 5000 rows and two columns. This program produces a filled contour plot of a function, labels the contours and provides some custom styling for their colours. basic question contour plot in paraview — CFD Online Discussion Forums. Function File: contour (z, n, x, y) Make a contour plot of the three-dimensional surface described by z. Trek is a NASA web-based portal for exploration of Mars. We can plot the gradient of f by using quiver. Curve Fits: Use least squares linear, polynomial, power, and exponential curve-fits. Veusz 2D Examples (also see 3D) spectrum. The level curves are taken from the contour matrix c computed by contourc for the same arguments; see the latter for their interpretation. I made a table of x,y, and z values. It creates a 3D map or a contour chart from the scattered points, numerical arrays or other data sets. Contour plots allow for the efficient and reliable presentation and visualization of a large amount of NDT data and therefore eliminate the need for cor-relating multiple, cumbersome scatter plots. Highlight Specific Contour Levels. in geography and meteorology. Veusz is multiplatform, running on Windows, Linux/Unix and macOS. If the first argument hax is an axes handle, then plot into this axis, rather than the current axes returned by gca. If you are familiar with Matlab plot syntax, you should use plot. Function File: hist (y, x) Produce histogram counts or plots. I want to take my measured and tabulated x, y, and z data and put it in a contour plot. The results are displayed in the STATISTICAL style. …Come here to the geometry, and let. I work in a manufacturing business where we use 2D contour plots to evaluate the surface uniformity of the parts we manufacture. The data consists of z values on a (x,y) grid, similar to the 3D surface plot. 2d contour plot in matlab keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. Contour doesn't have exactly what I want, so I'll do it myself, and maybe submit a PR at some point. num_plot_contours – number of contours to plot in 2D plots (up to number of contours in analysis settings) num_shades – number of distinct colors to use for shading shaded 2D plots; param_names_for_labels – file name of. If the resultant is \( \textbf{c} \), then. polar (theta, rho) Make a two-dimensional plot given polar the coordinates theta and rho. 2D Steady Convection - Numerical Results uncheck the box next to Wireframe under User Location and Plots. 2D Histogram Contour in Python How to make 2D Histogram Contour plots in Python with Plotly. I have a file. 0, I was trying to add a 2D constraint graph line to a contour plot to indicate the constrained optimum. So, you have always wondered how on Earth one can make a real map with gnuplot. I am trying to plot a contour map with the following data I have in 3 columns. Only line style and color are used; Any markers defined by style are ignored. This is trivial in JMP and relatively straightforward (though less simple) in Excel (though its contour plots have a cheesy shading effect). Also, the X and Y boundaries of each contour plot are different in some cases. The first example we see below is the graph of z = sin(x) + sin(y). Contour Plots¶ class sage. silo' Select pseudocolor plot of variable temp Select contour plot of variable temp PlotAtts-Contour select 10 contour levels PlotAtts-Contour select single color (black) for contour colors Controls- Annotation-2D-Xaxis-Custom title Longitude. Available with 3D Analyst license. In this article we will show you, How to Create a Scatter Plot, Format its size, shape, color, adding the linear progression, changing theme of a Scatter Plot using ggplot2 in R Programming language with example. To do this, just select your three columns of data, then insert a Contour chart (listed under. This example shows how to change the colors used in a filled contour plot. Is this contour being computed by a C or Matlab program? Assuming you are using a C program to compute the coordinates of the contour you have a basic decision to make: either add graph-drawing capability to your program or export your data to a program you already have that is already good at drawing graphs. In addition to a complete set of standard plotting routines including line, scatter, polar, and bar graphs, you can create advanced visualizations including line-contour and filled-contour plots, 2D histograms, vector arrow fields, streamline plots, and more. We offer manuals in English for all models and in French for some models. Tutorial for Mathematica & Wolfram Language. It is particularly interesting to superimpose this on a contour plot of f. How can I plot a 2D contour from data vectors?. All values of x and y are between -1. Publication quality 2D plots can be produced by matplotlib, which is an open source object-oriented Python library. Chapter4 Contour(Isoline)Plots 4. The first of these is the resultant, and this is obtained when the components of each vector are added together. There are three Matplotlib functions that can be helpful for this task: plt. That is, the z-value is found by substituting in both an x-value and a y-value. This is a basic introduction to some of the basic plotting commands. If you want to have the contour maps as an individual layer (e. I am plotting a slice of data as a 2-dimensional contour using contourf(). The left plot at the picture below shows a 3D plot and the right one is the Contour plot of the same 3D plot. This loads the module Graphics. In this case all line kinds for the contour lines become the same, which is just next line kind to the surface plot. ggplot2 can not draw true 3d surfaces, but you can use geom_contour and geom_tile() to visualise 3d surfaces in 2d. Contour Plots. Grapher is a full-featured scientific graphing package, allowing the user to import data in many formats, create and combine a wide variety of 2- and 3-D plot types, and customize the plots in infinite detail. Note that outline and fill contours cannot be drawn at the same time. It supports line plots, scatter plots, piecewise constant plots, bar plots, area plots, mesh-- and surface plots, patch plots, contour plots, quiver plots, histogram plots, polar axes, ternary diagrams, smith charts and some more. A contour line that connects places with the same temperature is called an isotherm. That is, the z-value is found by substituting in both an x-value and a y-value. Although this code doesn't use matplotlib, I want to introduce how to generate 2D interactive contour plot using Bokeh. ment but presented as two-dimensional contour plots and to produce an easy-to-read map of NDT data. …There are lots of options available…within SOLIDWORKS post-processing,…and we're going to explore some of these. I am plotting a slice of data as a 2-dimensional contour using contourf(). 3D plots over the complex plane. Kernel density estimation is performed to generate a continuous approximation of the sample density. A quick google search on how to make logarithmic contour plots and logarithmic color-bars yielded some unhelpful results, so I thought I'd give a quick post here. In R, there are two kinds of contour plots, “2-D contour plots” in which contours are drawn on a standard set of scatter diagram axes, and levels plots that illustrate similar information by coloring or shading a grid of points on the 2-D space. Contour Plotting Contour plotting is available in both 2D and 3D graphs. Syntax for the command is − subplot(m, n, p) where, m and n are the number of rows and columns of the plot array and p specifies where to put a particular plot. This displays the Chart Tools, adding the Design, Layout, and Format tabs. Part 1 of a two-part series on creating contour plots (maps) in MATLAB. If you want to have the contour maps as an individual layer (e. It creates a 3D map or a contour chart from the scattered points, numerical arrays or other data sets. Online scatter plot and scatter diagram maker with examples. For dominantly real values, the function values are near 0, and for dominantly imaginary values, the function values are near 1. ContourPlot (xy_data_array, xrange, yrange, options) ¶ Bases: sage. Find more Mathematics widgets in Wolfram|Alpha. At positions where f does not evaluate to a real number, holes are left so that the background to the contour plot shows through. Once for X and once for Y (the two points needed in order to plot a point on a 2D screen. I am plotting a Torque Speed plot for an electric motor. com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. We will be using variables speed and dist from car data frame to draw. I want to plot the sphere function as a surface or a contour plot, and the position and fitness value of the best individual superimposed with it. Activate Book1B and highlight column D and then click Contour-Color Fill button from the 3D and Contour Graphs toolbar. We can plot the gradient of f by using quiver. I need to plot a 2D Contour form data. polar (theta, rho) Make a two-dimensional plot given polar the coordinates theta and rho. Setting this to False can be useful when you want multiple densities on the same Axes. We will be using variables speed and dist from car data frame to draw. I am plotting a Torque Speed plot for an electric motor. I am trying to plot a contour map with the following data I have in 3 columns. contour requires a 2-D array Z that speci es function values on a grid. With custom contour plots in Spotfire, drilling engineers can change the values of any two independent parameters (X & Y axes) to find the combination of those values that produce the best results for a third (Z). I made a table of x,y, and z values. In sum - mary, the contour plots provide. circle() - a circle with given radius; ellipse() - an ellipse with given radii and angle. NET developers joined together with a common goal: to learn, teach, and have fun programming. Use a contour plot to see how a response variable relates to two predictor variables. m file will generate 2D contour plot one has to form a matrix to get contour plot which will be generated in the following way. To create a contour plot, choose Analyze:Contour Plot ( Z Y X ). In the case of contour(Z) where Z is a 2D array, its shape unambiguously sets the grid for the plot. Several possibilities are offered by ggplot2 : you can show the contour of the distribution, or the area, or use the raster function:. The new command is twoway contour. The ideal solution would be to have a genuine 2D plot with the contour lines on it (as opposed to using the 3D activex graphy thing), but I can't see anywhere within labview how to do this I can get nice looking intensity plots of the data, but I want contour lines (with user selectable dB interval). Placing a ContourPlot under a Plot3D. Prerequisites. Vector Fields. You want to use an interactive application to visualize your data in 3D? Read the Mayavi application section. The software component SWLib and others are available. If specified and inherit. We also have a toolbar holding quick acess buttons. Please note, as for now, the drawing below is square and you may want to stretch it to cover the actual area in a map. If you have variables in a Contour formula that are not listed as X, Plotting variables, JMP appends sliders below the plot so that the values can be interactively adjusted. 3V at constant drain voltage Vd = 1. SphericalDensityPlot3D is a plotting routine, that makes a density plot on a spherical surface e. The PLOTS= option requests a contour plot and a surface plot of the estimate (displayed in Figure 21. GNUPLOT can do a variety of graphics functions, including plots of. 3D and Contour Grapher. I have a number of 2D contour plots, and I need to represent them on one single 3D plot at various Z axis intervals. Basic Plotting with MATLAB MATLAB comes with extensive plotting tools, and comes with extremely detailed documentation online. It provides a simple view of the conformation of a protein. ) and more information about the theater. A contour plot is a graphical technique for representing a 3-dimensional surface by plotting constant z slices, called contours, on a 2-dimensional format. 2D L-shaped contour plot of an electrode. The points on (X,Y) plane with close values are joint together by contours. Instead of data, you can also input an equation of X and Y using either the input argument or the EQUATION property. go to Page 1: FComp; select "von mises stress" from the list (see Figure 14) click the Play button in the bottom panel (see Figure 15) click the Stop button in the bottom panel. From simple 2-D scatter plots to compelling contour, Forest and radar plots, SigmaPlot gives you the exact technical graph type you need for your demanding research. We can plot the gradient of f by using quiver. contour='yes' -- draw the contour plot on the xy-plane contour='surface' -- draw the contour plot on the surface itself contour='both' -- draw the contour plot both on the surface and xy-plane. Plotting data like measurement results is probably the most used method of plotting in gnuplot. Veusz is a scientific plotting and graphing program with a graphical user interface, designed to produce publication-ready 2D and 3D plots. 2D plots plot(y) If a single data argument is supplied, it is taken as the set of Y coordinates and the X coordinates are taken to be the indices of the elements, starting with 1. I have some data in excel format organized in three columns of x, y, z values. The actual developer of the software is Office Expander. I use ANSYS Fluent as the solver and I exported ASCII data (on the node) of certain quantities (velocity, vorticity etc).