newbie plotting pole-zero diagrams



Hugo,

> I upgraded to 5.10.0
> But ? dataplot; just results in a message "false"
> 
> I also tried things like (after reading earlier messages):
> xy:makelist([x,exp(-x*1.0)],x,0,10);
> plot2d([discrete,xy],[lines,"no"],[points,"yes"]);
> 

try

xy:makelist([x,exp(-x*1.0)],x,0,10);
plot2d([discrete,xy])$

This code should work. If not, check if you have gnuplot in your system.

Let's fix this first. And then we'll try to see what's the matter with
dataplot.

In any case, 

? dataplot

or

describe(dataplot);

both should give you the info about this function.

Are you using windows or linux?

Let me know what do you get.

-- 
Mario Rodriguez Riotorto
www.biomates.net