How to convert FileName(char) to the variable name and display the variable name image

Question

chihyu 2021-9-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1451069-how-to-convert-filename-char-to-the-variable-name-and-display-the-variable-name-image

评论： chihyu 2021-9-11

I want to use uigetfile to call my picture file instead of using cd. But there is a problem, that is, FileName belongs to char.

Is there a way to convert char to the variable name, and then display the image.

clc; clear
if exist('PathName','var')
    if PathName ~= 0
    else
        PathName = 'c:\';
    end
else
    PathName = 'c:\';
end
[FileName, PathName] = uigetfile( ...
    {'*.jpg;*.tif;*.png;*.gif','All Image Files';...
    '*.*','All Files' },'MultiSelect', 'on');
load(strcat(PathName,FileName));
varname = genvarname(PathName)
I = imread(varname);
imshow(I)
axis on;

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2021-9-11

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1451069-how-to-convert-filename-char-to-the-variable-name-and-display-the-variable-name-image#answer_785094

在 MATLAB Online 中打开

[FileName, PathName] = uigetfile( ...
    {'*.jpg;*.tif;*.png;*.gif','All Image Files';...
    '*.*','All Files' },'MultiSelect', 'on');
if ~ischar(FileName) && ~iscell(FileName); return; end   %user cancel
FileName = cellstr(FileName);   %if user selected only 1 then it is char
fullname = fullfile(PathName, FileName);
I = imread(fullname);
[~, basename] = fileparts(fullname);
imshow(I)
axis on;
title(basename);

4 个评论
显示 2更早的评论隐藏 2更早的评论

Walter Roberson 2021-9-11

在 MATLAB Online 中打开

[FileName, PathName] = uigetfile( ...
    {'*.jpg;*.tif;*.png;*.gif','All Image Files';...
    '*.*','All Files' },'MultiSelect', 'on');
if ~ischar(FileName) && ~iscell(FileName); return; end   %user cancel
FileNames = cellstr(FileName);   %if user selected only 1 then it is char
FileNames = fullfile(PathName, FileNames);
numfiles = length(FileNames);
for K = 1 : numfiles
    fullname = FileNames{K};
    I = imread(fullname);
    [~, basename] = fileparts(fullname);
    imshow(I)
    axis on;
    title(basename);
    pause(0.5)
end