imagesc from 1D array with coordinates and values

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Abhishek Saini 2020-5-4

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评论： darova 2020-5-4

data.txt

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Hi,

I have 3 vectors and I want to plot a 2D image using mesh/ imagesc/surf command. But How can I convert 1D array to 2D array with accurate coordinate points?

Let's assume, I have

x = [1, 2, 1.4, 2.6,8.9];
y = [8, 5, 6, 2, 8.4,3.5];
amplitude = [0.3, 0.5, 0.9, 1];

Attach is the data. where x = xx, y=yy and amplitude = C;

Thanks

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darova 2020-5-4

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Use griddata

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Abhishek Saini 2020-5-4

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My data has size of (300000x1) so I cannot use mesh grid. It will go out of memory.

I found the method.

scatter works for this.

pointsize = 2;
scatter(x,y,pointsize,amplitude);

darova 2020-5-4

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Image Processing and Computer Vision Computer Vision Toolbox Recognition, Object Detection, and Semantic Segmentation Image Category Classification

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