Calculate Matrix and then use previously calculated matrix in next iteration
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I start with a set of values (1x50) and perform an equation. I then want the calculated values to be used in the next iteration of the equation instead of the original values, but I'm getting errors.
This is the code I have tried:
topog = 100:149;
erodedSed = (0.1:0.1:5);
newTopog = topog - erodedSed;
for i = 2:10;
newTopog(i) = newTopog(i-1) - erodedSed;
end;
But I'm getting error:
"Unable to perform assignment because the left and right sides have a different number of elements.
Error in Untitled2 (line 6)
newTopog(i) = newTopog(i-1) - erodedSed"
Basically, instead of using "topog" in every iteration following the first, I want the code to replace topog with the "newTopog" calculated in the iteration before it, and then continue doing the equation for the further steps.
Many thanks for your help!
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採用された回答
Hernia Baby
2021 年 2 月 27 日
編集済み: Hernia Baby
2021 年 2 月 27 日
" i " is not the number but index number(line or row).
e.g.1 using for
clear;
topog = 100:149;
erodedSed = (0.1:0.1:5);
newTopog(1,:) = topog - erodedSed;
for i = 2:10
newTopog(i,:) = newTopog(i-1,:) - erodedSed;
end
newTopog(end,:)
e.g.2 using while instead of for (Recommended)
clear;
topog = 100:149;
erodedSed = (0.1:0.1:5);
newTopog = topog - erodedSed;
cnt = 1;
while cnt < 10
newTopog = newTopog - erodedSed;
cnt = cnt + 1;
end
newTopog
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