gradient map from n-by-n array

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katarado
katarado 2017-5-6
评论： Guillaume 2017-5-7
I have a n-by-n array which starts in the south-west corner. Each line is W-E and the next line is immediately north of it. If it helps the range of the values in the array is -76 to -30. I would like to plot a colour-gradient map for those values. Where do I start?
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Guillaume
Guillaume 2017-5-7
Huh? This, for example, is an array in matlab:
a = [1 6 11 16 21
2 7 12 17 22
3 8 13 18 23
4 9 14 19 24
5 10 15 20 25];
What is the "start" of this array? What is a "line" in this array? What is a "colour-gradient map"?

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回答（1 个）

Walter Roberson
Walter Roberson 2017-5-7
pcolor() perhaps ? Though I am not sure what you mean by a color gradient map. Perhaps you want to use https://www.mathworks.com/help/images/ref/imgradient.html or https://www.mathworks.com/help/images/ref/imgradientxy.html

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