Hi.. I am a beginner in C and I work on linux platform. I need to plot a simple X-Y graph. I have the x co-ords and y co-ords saved in two different integer arrays in correspoding order. I basically need to see if I get a straight line or not. Can I please get help with a sample code or any bits that might help? Thanks a lot.
If you are just wanting to know if it is a straight line or not (as in a yes or no answer), just ask yourself how you would check that with pen and paper, then implement the same check in code.
Well you can determine characteristics of the line mathematically. If you still want to visibly display the graph, you should look into a graphics library. SDL might be a good choice. (libsdl.org) Then of course you could use | \ / and -'s to display the line!
An alternative is to write a BMP file. When I wanted to see how the landscape of my 2D game was going to be, I had the program write a BMP file, at 72,000x48,000 pixels and using 1-bit color. Then just open the bitmap image in a standard image-editing program. All you need to know is the BMP file's format (I like making the width a multiple of 4 for simplicity reasons (32 for the 1-bit image)), and how to change the pixel colors accordingly. 24-bit is the easiest to work with.
High elevation is the best elevation. The higher, the better the view!
My computer: XP Pro SP3, 3.4 GHz i7-2600K CPU (OC'd to 4 GHz), 4 GB DDR3 RAM, X-Fi Platinum sound, GeForce 460, 1920x1440 resolution, 1250 GB HDD space, Visual C++ 2008 Express
If you're writing your own (not using a library) method of outputting BMP files, I'd suggest going with TGA instead. They're much simpler to figure out. If you're looking for more file types: Wotsit.org
Quzah.
Hope is the first step on the road to disappointment.
And if you just want to visualize the data aquired by a C program, dump values in a file, and use gnuplot to do the plotting. You can even write a script file doing the plotting using C, and launch gnuplot with simple system("") call. (or fork and exec). re-inventing the wheel can be cool and teach you a lot, but if the point is to get results...
Obsession to networking and protocols made me cook up these:
NSN - Network Status Notifier
epb - Ethernet Packet Bombardier
T.H.O.N.G.S - Textmode Helper On Network Getting Sniffed
Nibbles - console UDP print listener/filter + something else
Feel free to try, comment and improve =)
