Save all bands (1-336) of a multi-dimensional data in a structure array format

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Eberechi ICHI 2022-2-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1641010-save-all-bands-1-336-of-a-multi-dimensional-data-in-a-structure-array-format

评论： Eberechi ICHI 2022-2-3

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hello all, please i want to save any of the datad .dat doble output in a strutue format.

I want it to have all the 336 bands with the matrix order 416x640 for each of the band.

your assistcnae is highly anticipated.

Here is aexcerpt of my code.

clc
close all
clear all
infos = enviinfo('sample.hdr');
infow = enviinfo('White.hdr');
infod = enviinfo('Dark.hdr');
% Read the .raw data file
datas = multibandread('sample.raw',[infos.Height, infos.Width, infos.Bands],...
    infos.DataType, infos.HeaderOffset, infos.Interleave, infos.ByteOrder);
dataw = multibandread('White.raw',[infow.Height, infow.Width, infow.Bands],...
    infow.DataType, infow.HeaderOffset, infow.Interleave, infow.ByteOrder);
datad = multibandread('Dark.raw',[infod.Height, infod.Width, infod.Bands],...
    infod.DataType, infod.HeaderOffset, infod.Interleave, infod.ByteOrder);

Thanks.

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Walter Roberson 2022-2-2

Do you want to create a struct array with field named datad where each entry is 416 x 640, and the struct array would be 1 x 336 ?

Do you want to create a scalar struct with 336 different numbered fields each of which contains a 416 x 640 array?

Your output seems to suggest that possibly Dark.raw only contains a single 416 x 640 array. If that is not correct, if you think that Dark.raw contains 416 x 640 x 336 all in one file, then you need to investigate why it is saying 416 x 640 only. Your dataw shows that your general method is able to return a 416 x 640 x 336, so it would have to be something about the individual file for which infod.Bands is saying 1 instead of 336.

Eberechi ICHI 2022-2-2

Yes thanks Walter, you are right. I meant I dataw data. I want to save it in a structure array for all the bands.

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Answer 1

Walter Roberson 2022-2-2

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1641010-save-all-bands-1-336-of-a-multi-dimensional-data-in-a-structure-array-format#answer_887575

在 MATLAB Online 中打开

%example data to illustrate the function
dataw = randi([0 255], 416, 640, 336, 'uint8');
%the work
s = struct('dataw', squeeze(num2cell(dataw, [1 2])));
%check
whos s
  Name        Size               Bytes  Class     Attributes

  s         336x1             89491648  struct              
size(s(1).dataw)
ans = 1×2
   416   640