combine the string and number

hello, I have the coordinates of objects in the image and the path of the image and I want to combine all these in the cell array

trainingData = combine(bldsTrainT,bldsTrainW); % this function to combine

when adding the path of the image, display the error

how can instead this function with others to accept the path

Answer 1

[Walter Roberson]

Are you referring to combine for augmented image data store?

If so then each element you combine, such as bldsTrainT, must be a data store, not a path itself. You would imageDatastore to wrap the path into an image data store and combine.

[weam]

thank you very much for explaining

[weam]

Sorry, another question: when complete the combine, i want to read the trainingData and then specify the path and the coordinate of two objects.

An image is supposed to appear via the path (I) and specify the two objects

data = read(trainingData);

I = data{1}
Tbox1 = data{2};
Wbox2 = data{3};
RGB = insertShape(I,'Rectangle', {bbox1, bbox2} );
Image = imresize(RGB,2);
figure
imshow(Image)

the erro in RGB coudn't recognize the I

Error in insertShape

validateAndParseInputs(I, shape, position, varargin{:});

[Walter Roberson]

What shows up for

class(data)
size(data)

[weam]

After read the data appears in the same picture. and before the read the data (data gTruth and consists of DataSource, LabelDefinitions, and label data

[Walter Roberson]

What is the error message you are receiving in the insertShape?

[weam]

the message error

Error using insertShape>errIf1
The POSITION must not be cell array for shape rectangle.

Error in insertShape>crossCheckShapePosition (line 471)
        errIf1(errCond, 'vision:insertShape:positionCell', shape);

Error in insertShape>crossCheckInputs (line 444)
crossCheckShapePosition(shape, position);

Error in insertShape>validateAndParseInputs (line 290)
    crossCheckInputs(shape2, positionNew, color2);

Error in insertShape (line 129)
    validateAndParseInputs(I, shape, position, varargin{:});

Error in recognitionThree (line 77)
RGB = insertShape(I,'Rectangle', {bbox1, bbox2} );

[Walter Roberson]

insertShape only permits a cell array for "line", "polygon", or "filled-polygon". If you want to plot more than one rectangle you need to use a numeric array

RGB = insertShape(I,'Rectangle', [bbox1; bbox2] );

[weam]

Thank you so much

Answer 2

[Aylin]

Hi, I wanted to second Walter's answer which will work best if you want to read the filenames as image data.

However if you do really want the raw filenames in the CombinedDatastore, you can use ArrayDatastore to wrap the filenames before calling combine:

filenames = {'file1.png' 'file2.png'}';
filenameDs = arrayDatastore(filenames, OutputType="same");

trainingData = combine(bldsTrainT,bldsTrainW, filenameDs);
% Or use "transform" to get more control over the combination method
trainingData = transform(bldsTrainT, bldsTrainW, filenameDs, ...
                         @(trainT, trainW, filename) {trainT trainW filename});

Is this what you're looking for?