> TIA

> > Hi
> > I've looked for a function which gives me a color proporcional to
> > number, but I've not found. I mean, I could use the number but only to
> > set a color (eg in rgb [num 0.5 0.5]) but I would like to have a whole
> > set of color in function of the single number. Any idea?

> > TIA

> How about just using one of the pre-defined colormaps that MATLAB
> supplies, such as Jet?  Plug in an index and you'll get an RGB color
> from it.

> Really, you need to supply more info.  How do we know what color you
> want?  There are an infinite number of colors that could be generated
> from an infinite number of functions. How can I know what function
> you'd be happy with?
> - ImageAnalyst

> > On Feb 22, 5:22 am,ivankappa<ivanka...@gmail.com> wrote:

> > > Hi
> > > I've looked for a function which gives me a color proporcional to
> > > number, but I've not found. I mean, I could use the number but only to
> > > set a color (eg in rgb [num 0.5 0.5]) but I would like to have a whole
> > > set of color in function of the single number. Any idea?

> > > TIA

> > How about just using one of the pre-defined colormaps that MATLAB
> > supplies, such as Jet?  Plug in an index and you'll get an RGB color
> > from it.

> > Really, you need to supply more info.  How do we know what color you
> > want?  There are an infinite number of colors that could be generated
> > from an infinite number of functions. How can I know what function
> > you'd be happy with?
> > - ImageAnalyst

> Fundamentally, I would like to assign a color to a line proporcionally
> to its length. The relation is not direct proportion because I've to
> face lines with very different length. But, for example, I would like
> that the max line is dark red, the 50% line is orange, the 25% is dark
> yellow, and so on using all colours like an altimetric map, but they
> could be others, as soon as I can put them in an explaining colorbar.

> tnx- Hide quoted text -

> - Show quoted text -

> > On 22 Feb, 14:14, ImageAnalyst <imageanal...@mailinator.com> wrote:

> > > On Feb 22, 5:22 am,ivankappa<ivanka...@gmail.com> wrote:

> > > > Hi
> > > > I've looked for a function which gives me a color proporcional to
> > > > number, but I've not found. I mean, I could use the number but only to
> > > > set a color (eg in rgb [num 0.5 0.5]) but I would like to have a whole
> > > > set of color in function of the single number. Any idea?

> > > > TIA

> > > How about just using one of the pre-defined colormaps that MATLAB
> > > supplies, such as Jet?  Plug in an index and you'll get an RGB color
> > > from it.

> > > Really, you need to supply more info.  How do we know what color you
> > > want?  There are an infinite number of colors that could be generated
> > > from an infinite number of functions. How can I know what function
> > > you'd be happy with?
> > > - ImageAnalyst

> > Fundamentally, I would like to assign a color to a line proporcionally
> > to its length. The relation is not direct proportion because I've to
> > face lines with very different length. But, for example, I would like
> > that the max line is dark red, the 50% line is orange, the 25% is dark
> > yellow, and so on using all colours like an altimetric map, but they
> > could be others, as soon as I can put them in an explaining colorbar.

> > tnx- Hide quoted text -

> > - Show quoted text -

> =========================================
> Ivan:
> This is pretty easy.  You should have been able to figure it out.  It
> goes something like this:
> myColorMap = hot; % Use the "hot" color map for example.
> myLineLength = 0.5; % or whatever percentage you want.
> myLineColor = myColorMap (int16(myLineLength *64),:); % Extracts a
> single RGB color.
> % Then plot your line with myLineColor.
> If you don't like the hot color map, use autumn or whatever you like
> by making up a custom one.
> Regards,
> ImageAnalyst