chaoseverlasting said:I want to graph curves in C++. I can program them in, find the x,y,z coordinates, but I don't know how to graph them. I am using Dev C++. How would I go about graphing them? Is there some predefined graphics library that I can use or is it more complicated than that?
chaoseverlasting said:how would you use an open gl library to plot the points?
ranger said:Use a program like gnuplot. Have your C++ program output the coordinates into a text file, then feed that file into gnuplot
chroot said:I just use the cygwin environment. It comes with everything you'd expect of a unix workstation, including gnuplot.
- Warren
chroot said:Cygwin installs and runs just fine on Vista. If you have any odd permission problems, just set the envrionment variable NONTSEC.
- Warren
ranger said:Why do you need Cygwin? There are precompiled binaries of gnuplot available for a win32 environment.
http://gnuplot.sourceforge.net/development/binaries/
malawi_glenn said:Well iam a newbie and have still not got ANY of those on the link you gave me working:(
ranger said:Well I don't know what you're doing then. I downloaded the latest win32 binaries from the link I gave you and I can successfully run them. Heres the catch, I'm on a linux manchine and the windows version runs perfectly using wine!
Have you read the file README.Windows? In the directory bin/ there is the main windows executable called wgnuplot.exe. What happens when you try to run it?
chroot said:gnuplot has nothing to do with any specific language. You just dump out your data to a text file and use gnuplot to plot it.
- Warren
malawi_glenn said:i think i got it work now=) thanx!
Shall read the tutorials on GNUplot homepage. Do you recommend any perticular for a beginner who wants to do 2D and 3D plots with Java, C++ and Fortran?
To create a graph in C++ using Dev C++, you will need to use a graphics library such as OpenGL or SDL. These libraries provide functions for drawing shapes and lines on the screen. You can also use a third-party library specifically designed for graphing, such as the C++ Graph Library.
Yes, you can plot multiple curves on the same graph by using different colors or different line styles for each curve. You can also use a legend to identify each curve on the graph.
To label the axes, you can use the built-in functions for text drawing in your chosen graphics library. For example, you can use the "glutBitmapCharacter" function in OpenGL to draw text on the screen. To add a title, you can use the same method or create a separate text box and position it above the graph.
Yes, it is possible to save your graph as an image file using the functions provided by your graphics library. For example, you can use the "glReadPixels" function in OpenGL to capture the contents of the screen and save it as an image file.
Yes, you can customize the appearance of your graph by using different colors, line styles, and fonts. You can also add grid lines, change the scale of the axes, and adjust the size and position of the graph on the screen.