清空筛选条件
清空筛选条件

For loop not stopping

1 次查看（过去 30 天）
Hrvoje Lukacic
Hrvoje Lukacic 2022-12-1
评论： Hrvoje Lukacic 2022-12-1
Hi! I have a raster file in tiff format which has some values set to -9999. I wrote a small code that should replace all -9999 values with NaN. Whren I execute the code the loop just keeps on going and it wont stop and generate the result. Can you please hel me figure out why? I am not attaching the raster because it is to big.
%reading Raster Input data from a file
[aspect, A] =readgeoraster('Aspect_0,5m.tif');
[slope, A] = readgeoraster('Slope_0,5m.tif')
imagesc(aspect)
%reading csv Input data from a file
discontinuity_orientations =readtable('orientations.xlsx') ;
for i =1:size(aspect,1)
if aspect (i,1)==-9999
aspect (i,1) = NaN
end
end

请先登录，再回答此问题。

采纳的回答

David Hill
David Hill 2022-12-1
Instead of a for-loop, just do it all at once.
idx=aspect(:,1)==-9999;
aspect(idx,1)=nan;
  1 个评论
Hrvoje Lukacic
Hrvoje Lukacic 2022-12-1
Thank you for your answer !! But just in case, how to I make a for loop which goes from element to element and does some operation?

请先登录，再进行评论。

更多回答（1 个）

VBBV
VBBV 2022-12-1
编辑：VBBV 2022-12-1
if ismember(-9999,aspect(i,1))
Check using ismember

类别

在 Help Center 和 File Exchange 中查找有关 Multidimensional Arrays 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by