Code：多项参考

1. [Matlab]删除XLS文件特定Sheet或空白Sheet（默认Sheet）；
2. [SPEI_SPI]计算栅格、站点;
3. [Matlab]统计知网关键词词频;
4. [Matlab]

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% Read Image [image, geo]=readgeoraster(imgpath); info=georasterinfo(imgpath); % Save Image geotiffwrite('newimg.tif', image, geo);

% read a geo-referenced image 
[image, geo]=readgeoraster(filepath);

try
    info=geotiffinfo(filepath);
catch
    info=georasterinfo(filepath);
end

% write a geo-referenced image 
try
    geotiffwrite(otpath, uint8(class_imag), geo);
catch
    strcmd=['gdalinfo ', filepath];
    [~, cmdout]=system(strcmd);
    epsg=extractBetween(cmdout, "EPSG:"," got from GeoTIFF keys");
    epsg=epsg{1};
    % geotiffwrite(otpath, uint8(class_imag), geo, 'GeoKeyDirectoryTag', info.GeoTIFFTags.GeoKeyDirectoryTag);
    geotiffwrite(otpath, uint8(class_imag), geo, 'CoordRefSysCode', ['EPSG:', epsg]);
end

1	geotiffwrite(otpath, uint8(class_imag), geo, 'CoordRefSysCode', ['EPSG:', epsg], 'TiffType', 'bigtiff');

1	geotiffwrite('m2.tif', image, geo, 'GeoKeyDirectoryTag', info.GeoTIFFTags.GeoKeyDirectoryTag);

5. [Matlab] A powerful toolbox for exporting images, refer to the online documentation for usage instructions; to save images and prevent accidents, use export_fig('exportfig_painters.png', '-png', '-painters', '-r300');. When the image contains Chinese characters, refer to this code snippet: export_fig([name,'.png'], '-png', '-r400','-q300');.
6. [Matlab] Get the parent folder path

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%========================================================================================================================== % Gets the folder one level up. If startingFolder is a filename with an extension it gets the containing folder and the child folder is null. % Returns null for both if the folder does not exist, and it's not a filename either. function [parentFolder, childFolder] = GetParentFolder(startingFolder) parentFolder = []; % Initialize childFolder = []; try if isfolder(startingFolder) [parentFolder, childFolder, ext] = fileparts(startingFolder); % Need to append extension for rare cases where deepest folder has a dot in the name. childFolder = [childFolder, ext]; elseif isfile(startingFolder) % It's a filename, not a folder. Need to change otherwise childFolder will be returned as the base file name. [parentFolder, childFolder, ext] = fileparts(startingFolder); childFolder = []; % No child folder since it's a filename, not a folder name. end catch ME message = sprintf('Error in GetParentFolder():\n%s', ME.message); uiwait(msgbox(message)); end return; % from GetParentFolder end

7. [Matlab]Export text on a text file.

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fid=fopen(txtpath, 'w', 'n', 'US-ASCII'); fprintf(fid, '%s\r\n', num2str(value)); fclose(fid); fclose('all');

8. [Matlab]Enhance RGB Image Code.

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function enhan_image=GenenhanImage(filepath) % https://www.mathworks.com/matlabcentral/fileexchange/64932-files-for-demystifying-deep-learning-semantic-segmentation-and-deployment?s_tid=srchtitle % Load the images located in the above path using imageDatstore - ML Function imds = imageDatastore(filepath); pic_num = 1; I_raw = readimage(imds, pic_num); enhan_image= histeq(uint8(I_raw)); end

1	image=imadjust(image, stretchlim(image), []);

9. [Matlab]To decrease computation time, use GPU processing, if it is available.

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I = imread("peppers.png"); if(canUseGPU) I = gpuArray(I); end

10. [Matlab]输出图片的强大Toolbox，用法说明参考在线文档（可能需要翻墙）以export_fig('exportfig_painters.png', '-png', '-painters', '-r300');保存图片，避免意外情况；当图片包含中文字符时参考此段代码export_fig([name,'.png'], '-png', '-r400','-q300');；
11. [Matlab]Figure全屏命令：set(gcf,'outerposition',get(0,'screensize'));；