Grid line for x=0 and y=0

Hello! Let us say we have a ordinary graph with x and y axes: I want to have one grid line at x=0 and one at y=0. That would make it much easier to read where a graph is negativ or positive. Couldnt find such possibility here.

Thanks in advance for helping out :-)

Regards Dennis

Answer 1

[Jos (10584)]

Take a look at GRIDXY, available on the File Exchange:

http://www.mathworks.com/matlabcentral/fileexchange/9973-gridxy-v2-2-feb-2008

gridxy(0,0)

would yield exactly what you want. And you can even play with the line-styles

Answer 2

[Dennis]

That would be exactly what I need! Unfortunately I get the message "Undefined function 'GRIDXY'" which is the same for "XYREFLINE" (I red that this was the command earlier). Do I maybe miss an add-on?

The version Ive installed: R2013b (8.2.0.701)

Answer 3

[Dennis]

Thanks for your answer, but I dont manage to use your way to plot my function. GRIDXY would be fantastic to use, but as I said, maybe I am missing a system tool or something, because I got the message that GRIDXY is an undefined function.