heatmap's range of colors is limited ?

I tried drawing a heatmap using the "HeatMap" command.

The documentation is here:

https://www.mathworks.com/help/bioinfo/ref/heatmap.html

Even after reading it I coudn't figure out the following:

The range of colors is too limited. It's as if the numbers that are too close in value are assigned the same color. ( please see the attached image, different numbers that are close in value have the same color). How can I change this so that unique numbers have unique colors with gradients ?

Answer 1

[darova]

Change clim property

set(gca,'clim',[-0.8 1.5])

[Abbi Hashem]

May I ask based on what did you choose these numbers? ( the -0.8 is NOT the minimum)

[Abbi Hashem]

Also, I am still getting the same colors for different values :/

[darova]

What about

colormap jet

[Abbi Hashem]

Thank you for your answer. However, what you're suggesting changes the color only, and what I want is for the color gradient to be more visible ( color itself doesn't matter). In other words, even if there is a VERY small difference between 2 values, I want the color difference to be clear between them

[darova]

Are you talking about interpolation? Maybe interp2