error when im trying to save

Hi all.im trying to make a load short forecasting but in one of the steps i cant go on because of this error: *??? Error using ==> save Unable to write file Data\testSet: No such file or directory.*..could you help me?thanks

[Thomas]

could you show the snipet of your code where 'save' occurs

[UPT]

thomas thanks for answering.

%% Split the dataset to create a Training and Test set

% The dataset is divided into two sets, a _training_ set which includes

% data from 2004 to 2007 and a _test_ set with data from 2008. The training

% set is used for building the model (estimating its parameters). The test

% set is used only for forecasting to test the performance of the model on

% out-of-sample data.

% Create training set

trainInd = data.NumDate < datenum('2008-01-01');

trainX = X(trainInd,:);

trainY = data.SYSLoad(trainInd);

% Create test set and save for later

testInd = data.NumDate >= datenum('2008-01-01');

testX = X(testInd,:);

testY = data.SYSLoad(testInd);

testDates = dates(testInd);

save Data\testSet testDates testX testY

clear X data trainInd testInd term holidays dates ans num text

??? Error using ==> save

Unable to write file Data\testSet: No such file or directory.

[Walter Roberson]

You would get that error if you did not have a subdirectory named "Data" in your current directory.

[Image Analyst]

Your code would be more robust if you had a special folder for your data files and didn't mix your data files in with your m-files, fig files, and other files. Learn how to use uigetdir(), uigetfile(), fullfile(), exist(), and mkdir().

[UPT]

thanks for your help,especially you walter roberson..

Answer 1

[Thomas]

try

save('testSet.mat','testDates', 'testX' , 'testY')  %to save it in the current directory

or create a directory called Data and use

 save('Data\testSet.mat','testDates', 'testX' , 'testY')   % to save in Data dir

or just add the follwing in a line above the save command

 mkdir('Data');   % this should create the data directory