How to save matlab workplace variables by including original file names

2 次查看（过去 30 天）
mee mee
mee mee 2016-1-25
评论： mee mee 2016-1-25
Hi I would like to know how I can save the matlab output files (i.e. matlab workplace variables), by including original file name.
e.g. I open a file (filename.matlab) with (load filename.matlab). Then I run a code to do calculation and I get some workplace variables (e.g. flow, pressure). I want to save those variables as filename_flow.mat and filename_pressure.mat.
I will use the same code on different filename, so I would like to know how I can save my variables as mentioned above (i.e. including the originalfile name)?

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2016-1-25
Not sure what you're asking, but I'll take a guess.
You can save both to a single file called "yourMfilename.mat", where yourMfilename is whatever your filename is. For example, if your m-file is called test.m, then you can get test.mat in your code like this using mfilename():
fullMatFileName = sprintf('%s.mat', mfilename('fullpath')); % Get base name from m-file name.
save(fullMatFileName , 'flow', 'pressure');
Or you can save each variable to its own .mat file if you want:
fullMatFileName = sprintf('%s_flow.mat', mfilename('fullpath')); % Get base name from m-file name.
save(fullMatFileName , 'flow');
fullMatFileName = sprintf('%s_pressure.mat', mfilename('fullpath')); % Get base name from m-file name.
save(fullMatFileName, 'pressure');
  3 个评论
显示 1更早的评论
Image Analyst
Image Analyst 2016-1-25
Try this:
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = 'C:\Program Files\MATLAB';
if ~exist(startingFolder, 'dir')
% If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;
end
% Get the name of the file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.mat');
[baseFileName, folder] = uigetfile(defaultFileName, 'Select a file');
if baseFileName == 0
% User clicked the Cancel button.
return;
end
% Get the name of the input .mat file.
fullInputMatFileName = fullfile(folder, baseFileName)
% load(fullInputMatFileName);
% Get it without the extension
[~, baseNameNoExt, ~] = fileparts(baseFileName)
% Get the name of the two output .mat files.
baseFileName = sprintf('%s_flow.mat', baseNameNoExt);
fullOutputMatFileName1 = fullfile(folder, baseFileName)
baseFileName = sprintf('%s_pressure.mat', baseNameNoExt);
fullOutputMatFileName2 = fullfile(folder, baseFileName)
Then, with those two filenames, call save() twice like I already showed you.
save(fullOutputMatFileName1, 'flow');
save(fullOutputMatFileName2, 'pressure');

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by