saving elements of a dataset as images

hello i would like to ask how to save inputData(:,:,idxSelected(i)) as an image file. thanks very much.
function [data,labelsVec,timestamps] = loadCSIDataset(fileName,label,visualizeData)
% loadCSIDataset Loads and visualizes the pre-recorded CSI dataset
% [DATA,LABELSVEC,TIMESTAMPS] =
% loadCSIDataset(FILENAME,LABEL,VISUALIZEDATA) loads the dataset that
% contains the data with the label (LABEL). Pre-recorded CSIs are
% visualized if (VISUALIZEDATA) is true. The function returns the
% pre-recorded beacon frame CSI (DATA), related timestamps (TIMESTAMPS),
% and the categorical labels vector (LABELSVEC).

% Copyright 2022-2024 The MathWorks, Inc.
arguments
fileName {char,string}
label (1,1) string
visualizeData = true;
end

% Load the pre-recorded dataset
datasetDir = which(fileName);
loadedData = load(datasetDir);
data = loadedData.data;
labelsVec = categorical(repmat(label,size(data,ndims(data)),1));
timestamps = loadedData.timestamps;
disp([‘Dimensions of the ‘ char(label) ‘ dataset (numSubcarriers x numPackets x numCaptures): ‘ ‘[‘ num2str(size(data)) ‘]’])

% Visualize the dataset
if visualizeData
plotSamplesFromDataset(data,label);
end

% Plot samples from the pre-recorded dataset
function plotSamplesFromDataset(data,mode)
% Plot at most three random samples of the dataset
inputData = abs(data); % Visualize only the magnitude of the CSI
numTotalCaptures = size(inputData,ndims(inputData));
numPlots = min(3,numTotalCaptures);
idxSelected = sort(randperm(numTotalCaptures,numPlots));

figure;
T = tiledlayout(2,numPlots,’TileSpacing’,’compact’);
% Plot 1 – CSI image
for i = 1:numPlots
nexttile
imagesc(inputData(:,:,idxSelected(i)));
colorbar;
xlabel(‘Packets’);
ylabel(‘Subcarriers’);
title([‘Raw CSI (#’ num2str(idxSelected(i)),’)’]);
end

% Plot 2 – Normalized CSI periodogram
for j = 1:numPlots
nexttile
imagesc(csi2periodogram(inputData(:,:,idxSelected(j))));
colorbar;
clim([0 1]);
xlabel(‘Temporal Index’);
ylabel(‘Spatial Index’);
title([‘CSI Periodogram (#’ num2str(idxSelected(j)),’)’]);
title(T,[‘Randomly Selected Samples of "’, char(mode) ‘" Data’]);
set(gcf,’Position’,[0 0 650 450]);
end
end
endhello i would like to ask how to save inputData(:,:,idxSelected(i)) as an image file. thanks very much.
function [data,labelsVec,timestamps] = loadCSIDataset(fileName,label,visualizeData)
% loadCSIDataset Loads and visualizes the pre-recorded CSI dataset
% [DATA,LABELSVEC,TIMESTAMPS] =
% loadCSIDataset(FILENAME,LABEL,VISUALIZEDATA) loads the dataset that
% contains the data with the label (LABEL). Pre-recorded CSIs are
% visualized if (VISUALIZEDATA) is true. The function returns the
% pre-recorded beacon frame CSI (DATA), related timestamps (TIMESTAMPS),
% and the categorical labels vector (LABELSVEC).

% Copyright 2022-2024 The MathWorks, Inc.
arguments
fileName {char,string}
label (1,1) string
visualizeData = true;
end

% Visualize the dataset
if visualizeData
plotSamplesFromDataset(data,label);
end

% Plot 2 – Normalized CSI periodogram
for j = 1:numPlots
nexttile
imagesc(csi2periodogram(inputData(:,:,idxSelected(j))));
colorbar;
clim([0 1]);
xlabel(‘Temporal Index’);
ylabel(‘Spatial Index’);
title([‘CSI Periodogram (#’ num2str(idxSelected(j)),’)’]);
title(T,[‘Randomly Selected Samples of "’, char(mode) ‘" Data’]);
set(gcf,’Position’,[0 0 650 450]);
end
end
end hello i would like to ask how to save inputData(:,:,idxSelected(i)) as an image file. thanks very much.
function [data,labelsVec,timestamps] = loadCSIDataset(fileName,label,visualizeData)
% loadCSIDataset Loads and visualizes the pre-recorded CSI dataset
% [DATA,LABELSVEC,TIMESTAMPS] =
% loadCSIDataset(FILENAME,LABEL,VISUALIZEDATA) loads the dataset that
% contains the data with the label (LABEL). Pre-recorded CSIs are
% visualized if (VISUALIZEDATA) is true. The function returns the
% pre-recorded beacon frame CSI (DATA), related timestamps (TIMESTAMPS),
% and the categorical labels vector (LABELSVEC).

% Copyright 2022-2024 The MathWorks, Inc.
arguments
fileName {char,string}
label (1,1) string
visualizeData = true;
end

% Visualize the dataset
if visualizeData
plotSamplesFromDataset(data,label);
end

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