GnuPlot Landing Page. Suggest changes. GNU Octave videos. GnuPlot videos. GNU Octave. Technical Computing. Numerical Computation. Data Dashboard. The approximation techniques known as Scientific Computing is used to solve numerical problems. To achieve this, the team of Scilab developers made use of Solvers and algorithms to build the algebraic libraries.
Source: www. See the description of plot above for a description of the arguments that loglog will accept. Function File: polar theta , rho Make a two-dimensional plot given polar the coordinates theta and rho.
Function File: semilogx args Make a two-dimensional plot using a log scale for the x axis. See the description of plot above for a description of the arguments that semilogx will accept. Function File: semilogy args Make a two-dimensional plot using a log scale for the y axis. See the description of plot above for a description of the arguments that semilogy will accept.
Command: gsplot ranges expression using title style Generate a 3-dimensional plot. The range for the y and z axes and any of the individual limits may be omitted. By default, the gsplot command plots each column of the expression as the z value, using the row index as the x value, and the column index as the y value.
The indices are counted from zero, not one. If parametric plotting mode is set using the command gset parametric , then gsplot takes the columns of the matrix three at a time as the x, y and z values that define a line in three space. Any extra columns are ignored, and the x and y values are expected to be sorted. For example, with parametric set, it makes sense to plot a matrix like.
Function File: mesh x , y , z Plot a mesh given matrices x , and y from meshdom and a matrix z corresponding to the x and y coordinates of the mesh. Function File: meshdom x , y Given vectors of x and y coordinates, return two matrices corresponding to the x and y coordinates of the mesh. The default value is "gnuplot". See section Installing Octave. It's initial value is determined by configure, but it can be changed in your startup script or at the command line in case configure got it wrong, or if you upgrade your gnuplot installation.
Function File: figure n Set the current plot window to plot window n. This function currently requires X11 and a version of gnuplot that supports multiple frames. Function File: grid For two-dimensional plotting, force the display of a grid on the plot. Function File: title string Specify a title for the plot. If you already have a plot displayed, use the command replot to redisplay it with the new title. Function File: xlabel string Function File: ylabel string Function File: zlabel string Specify x, y, and z axis labels for the plot.
If you already have a plot displayed, use the command replot to redisplay it with the new labels. The following functions all require a version of gnuplot that supports the multiplot feature. Function File: mplot x , y Function File: mplot x , y , fmt Function File: mplot x1 , y1 , x2 , y2 This is a modified version of the plot function that works with the multiplot version of gnuplot to plot multiple plots per page. Find centralized, trusted content and collaborate around the technologies you use most.
Connect and share knowledge within a single location that is structured and easy to search. I'm using Octave 3. So I always switch to "gnuplot" by commanding:. You can add that line to the. If the files does not exist, just create it on your home directory. This file is executed every time you start Octave unless you pass the -f or --norc option. You can add many other things to you.
As an example, this is part of mine:. Michael Prinkey. Gnuplot does line graphs and some 2D plotting of regular array data. Gnu Octave is a matlab work-a-like that does array manipulations and provides a programmable mathematical workbench. Last I check, it incorporates gnuplot for its graphing functions. Dear Michael, Thank you for your reply. Definitely, gnuplot can handle 3D plots aswell. It is a powerful and versatile plotting tool with rudimentary maths and data analysis functionality.
I never used octave myself, all I know is that the emphasis is more on the maths and data analysis part. Kind of like matlab.
January 29, , Reply to Alex. Dear Alex, Thank you for your reply. Combining art and math, I plan to generate high resolution, colored graphs for printing on canvas. Tags gnu octave , gnuplot Thread Tools.
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