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Heatmap


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Popejonash

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Hello,

so I'm looking to make something like a heat map. I can use the brush tool at a low opacity (like 10%) to plot my points, with more overlapping circles producing a deeper color. But is there then a way to convert these colors?

Right now I have a map of varying shades of red. Can I make anything that is 10% red show as yellow and anything 40% red show as orange, for example?

Thanks.

Ash
 
Thanks for the link. I actually came across this when I googled it earlier today.

I currently have something similar. Now I'm looking to make it multi-colored. So instead of the map showing different shades of blue, have the same points plotted by in a color scale with each shade of blue represented by a different color.
 
Just do several differing colour layers of each 'zone', if i have read it correctly?
 
I don't think that's what I'm trying for. Imagine an ipad screen and I want to show where people touch the screen with their finger. If I use the round brush tool and the color red at 10 percent opacity, the more somebody touches a particular spot, the darker red that spot becomes. If I have two circles side-by-side and then a third circle which overlaps the other two, the spot in the middle which has essentially two layers on it will be darker than the other parts.

But for the finished product, I want these different shades of red to appear as different colors (dark blue-light blue-green-yellow-orange-pink-red for example) where dark blue is the equivalent of 10 per cent red and orange is the equivalent of 70 percent red, for example.
 
maybe you can use photoshop mode colortabel "spectrum"
if you make your image in mode greyscale and then mode indexed color, you can put your own colortable on it

if you go then to image colortable and choose "spectrum" you have what you want
 
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