[pstricks] Automate a line drawing routine

Herbert Voss Herbert.Voss at FU-Berlin.DE
Tue Dec 30 09:27:49 CET 2008

David Arnold schrieb:

> I'd like to produce some line graphs, such as:
> http://www.kutasoftware.com/FreeWorksheets/Slope%20From%20a%20Graph.pdf
> Now, I can produce these one at a time, not much problem, but I'd  
> like to automate the task a bit:
> 1. I like the domain to be [-5,5], and the range [-5,5]. I'd like the  
> x-axis labeled -5 and 5 at each end, same for the y-axis. I'd like  
> the x- and y-axes labeled at the right and top ends with "x" and "y",  
> respectively.
> 2. The user can easily choose two points P and Q on the grid.
> 3. The code automatically determines the equation of the line through  
> P and Q (no horizontal or vertical allowed) and then clips it to the  
> domain and range in item #1. The line should be drawn with arrowheads  
> at each end of the line.





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