Re: question

[Dmitri A. Sergatskov]

On Sat, Dec 18, 2010 at 3:54 AM, Ubald Bauer <address@hidden> wrote:
> Hello,
> I am using Octave for plotting mathematical functions for a high school
> paper.
> I have a question about that:
> I am plotting z=x^2+y^2 with the function image like in the attachment.
> When adding the colorbar, it only reaches from 0 to 1 (see attachment number
> 2), although the it must be from 0 to 50.
> What is my fault? Can you please help me.
> Kind regards,
> Ubald Bauer

You may want to use imagesc() function instead of image()
See

http://www.mathworks.com/help/techdoc/ref/image.html
http://www.mathworks.com/help/techdoc/ref/imagesc.html

for explanation.

Dmitri.
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