Problem when using imwrite ...

2018 2 16
1 个回答
更新时间：2018 2 17
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%The directory where the image will be saved
folder = '\Users\public\Documents\MATLAB\faceBank';
name = strcat(Rnombre,Rapellido,Rcargo,'.jpg');
%Are attributes of which the file name will be composed
imwrite(work_area,fullfile(folder,name));
work_area is the variable that contains the image
i have this error
Error using imwrite>parse_inputs (line 510)
A filename must be supplied.
Error in imwrite (line 418)
[data, map, filename, format, paramPairs] = parse_inputs(varargin{:});

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回答（1 个）

Walter Roberson
Walter Roberson 2018-2-16

0 个投票

In your
strcat(Rnombre,Rapellido,Rcargo,'.jpg')
I suspect that one of those variables is a cell array instead of a character vector.
Also if one of them is numeric then you would need to cross check whether the results would be char or numeric. Do not use strcat to try to insert numeric values into a character vector: see sprintf() or num2str for converting numeric to characters.

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I get the data in this way, it is assumed that they are already of the "String" type
try with num2str () and sprintf () but it did not work.
if I write the address of the direct file, it works (but it's not what I need)
Rnombre = get(handles.nombreM,'String');
Rapellido = get(handles.apellidoM,'String');
Rcorreo = get(handles.correoM,'String');
Rcargo = get(handles.cargoM,'String');
Walter Roberson
Walter Roberson 2018-2-16
If one of those is a handle to a uicontrol style edit or text for which Max has been set to more than 1, or if one of them is a handle to a uicontrol style push or pop, then get() of the String will return a cell array of character vectors rather than a character vector.
You should use class() to test each of those variables.
Image Analyst
Image Analyst 2018-2-17
Try
Rnombre = char(handles.nombreM.String);
Rapellido = char(handles.apellidoM.String);
Rcorreo = char(handles.correoM.String);
Rcargo = char(handles.cargoM.String);
Thanks, it worked!

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