The code is:
filename = sprintf('michael%s.bat',datestr(now));
...
save (filename,vec)
vec is a vector
I'm getting this error:
Error using save
Argument must contain a string.
Error in sumfnc (line 13)
save (filename,vec)
I'm unsure on how filename is not a string.
The problem is not filename, it is vec. With the functional usage of save, you need to do:
save(filename,'vec')
However, since filename will contain a space, you will also need to modify filename. Try:
save(strrep(filename,' ','_'),'vec')
to replace spaces with _.
Related
I would like to convert matlab.mat file to a .csv file. Here is the loading procedure:
>> FileData = load('matlab.mat')
FileData =
struct with fields:
MIMICtable: [278340×59 table]
Then I tried to save the CSV file but the following error occurs:
>> csvwrite('file.csv',MIMICtable)
Check for missing argument or incorrect argument data type in call to function 'real'.
Error in csvwrite (line 47)
throw(e)
I am not sure the meaning of the error message. Could someone help?
Your data is a table object. Use the function writetable to write it to a CSV file. csvwrite accepts only numeric arrays as input.
Yes, this is a weird error message. On the other hand, csvwrite is no longer recommended, which means it has been superseded by a newer function, and is no longer maintained.
I want to save the value of a variable from MATLAB command history in a text. I am trying the command:
Save([d:/work/abc.txt], 'z1', '-ASCII');
An error appears
Error: input charecter is not valid in MATLAB environment or expression.
What you are missing are the quotes within the brackets for denoting string.
['string']
You should use save (with lower case for "s").
Also the filename should be defined as a string: enclose it withi two '; also you do not need the [] unless, for example, you want to build a string using a variable and / or any function to create part of the filename (e. g.
['d:/work/abc_' num2str(k) '.txt']
assuming k value is 3) to get d:/work/abc_3.txt
Try change your code to:
save(['d:/work/abc.txt'], 'z1', '-ASCII');
Hope this helps.
Qapla
for m = 1:length(lst_region)
out=cellfun(#(x) str2double(x(1:strfind(x,'_')-1)),lst_region(m));
str=[num2str(out(1)) '.mat'];
save ( str ,distance);
end
Error using save
Argument must contain a string. Line 3
I want to save files like '1.mat' '2.mat' etc.. but i have error can you please help me to fix it
If distance is a variable in your workspace, you will have to call save(str, 'distance');. You have to enter the name of the variable, not the variable itself.
I have some data in a cell array,
data2={[50,1;49,1;26,1];...
[36,2;12,2;37,2;24,2;47.3,2];}
and names in another cell array,
names2={'xxx/01-ab-07c-0fD3/0';'xxx/01-ab-07s-0fD3/6';}
I want to extract a subset of the data,
data2_subset=data2{1,:}(:,1);
then a temporary file name,
tempname2=char(names2(2));
an save the subset to a text file with
save (tempname2, 'data2_subset', '-ASCII');
But I get this error message: _
Error using save
Cannot create '6' because 'xxx/01-ab-07s-0fD3' does not exist.
To try to understand what is happening, I created a mock dataset with simpler names:
names={'12-05';'14-03'};
data={[50,1;29,1;25,1];[35,2;22,2;16,2;38,2];[40,3;32,3;10,3;44,3;43,3];};
data_subset=data{1,:}(:,1);
tempname=char(names(2));
save (tempname, 'data_subset', '-ASCII');
in which case the save command works properly.
Unfortunately I still do not understand what the problem is in the first case. Any suggestions as to what is happening, and of possible solutions?
MATLAB is interpreting the the forward slashes (/) as directory separators and 6 as the intended file name (your second example doesn't have this slash problem).
Since the relative directory tree xxx/01-ab-07s-0fD3/ doesn't exist, MATLAB can't create the file.
To solve the problem, you can either create the directories beforehand using mkdir():
>> pieces = strsplit(tempname2,'/');
>> mkdir(pieces{1:2});
>> save(tempname2, 'data2_subset', '-ASCII');
or replace the / with some other benign symbol like _:
>> tempname3= strrep(tempname2,'/','_');
>> save (tempname3, 'data2_subset', '-ASCII');
(which works for me).
I am writing a program to plot graphs in a loop and I want to save each graph that comes out as a .jpg file with a variation of the file name. Here is my code for saving the graphs:
filename = strcat('WI_Pollutants_', D(i,6), '_200706_O3');
saveas(gcf, filename, 'jpg');
The saved file should come out as the following with D(i,6) changing each iteration of the loop.
WI_Pollutants_003-0010_200706_O3.jpg
However, I'm running an error: (Maybe it has to due with saveas wanting a string only?)
Error using saveas (line 81)
Invalid filename.
saveas only accepts characters as the filename. But when filename was created, strcat made it a cell array. Therefore, the filename needs to be converted to a character array.
filename = char(strcat('WI_Pollutants_', D(i,6), '_200706_O3'));
saveas(gcf, filename, 'jpg');
This solves the problem.
I think your D{i,6} is ending up wrapped up as an array, from this line:
D{i,6} = [num2str(D{i,6}) '-' num2str(D{i,7})];
To solve this, just removing the []'s
D{i,6} = num2str(D{i,6}) '-' num2str(D{i,7});
I think what happened is your D{i,6}=['someString'], and concatinating added in the []'s that werent' desired.
As a check, if something like this happens again, just fprintf(filename) right before use, and look at what comes out. I suspect you'll find the issue there. You can always remove the print statement later on.