Percentage increase and decrease from two matrices

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Joydeb Saha 2022-12-22

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https://ww2.mathworks.cn/matlabcentral/answers/1883052-percentage-increase-and-decrease-from-two-matrices

回答： Image Analyst 2022-12-22

Attaching two matrices A1 and B1. I want to calculate the percentage increase and decrease

deltaSignal = (B1 - A1);
percentageDifference = deltaSignal ./ A1;

A1 from B1. Total percentage increase and the total percentage decrease. I have done some part which I am writing here.

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Joydeb Saha 2022-12-22

image1.png

Ok, let me explain more clearly. See the attached image of Ice. When I make the plot for D = B1 - A1, I have this image, where you may see that there are some blue pixels, these are the positive values (Indicates the ice increase). i want to have the percentage of increase of ice (blue pixels).

Jan 2022-12-22

@Joydeb Saha: How do you define "the percentage of increase of ice" mathematically? The image does not clarify this.

A mathematical definition of "percentage" means: A number of X divided by a number of Y times 100. So what are your X and Y for "total percentage increase and the total percentage decrease".

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