How to print value from Structure in MATLAB

Hello Everyone, I hope you are doing well, I have the following Structure which include Prediction and ValueStructure

I want to print the Value from ValueStructure

for Class 1 i have write the following Code.

pred2 = sprintf('Class1 Levels: %d\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n',CombineOutput(1).PRFStructure.StagLevels,CombineOutput(1).PRFStructure.StaggMinimumValue,CombineOutput(1).PRFStructure.StaggMaximumValue);

But i am unable to print StagPRFValue. How can i print it.

For Class 2

pred1 = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ',CombineOutput(2).PRFStructure.Levels,CombineOutput(2).PRFStructure.DSmaximum,CombineOutput(2).PRFStructure.DSminimum);

I want to print unique values of DSPRFValue and DS Length

How can i do that in Matlab

Answer 1

[Jonas]

you can access the 4 doubles in the cell StagPRFValue by e.g.

CombineOutput(1).ValueStructure.StagPRFValue{1}

the other two values can be accessed with

CombineOutput(2).ValueStructure.DSPRFValue

and

CombineOutput(2).ValueStructure.DSlength

if you want the unique values of those vectors, use unique(CombineOutput(2).ValueStructure.DSlength)

[Stephen john]

@Jonas i am using for loop but it does not be written the second cause i want it to be written in array.

[Stephen john]

@Jonas First one is also not working

[Jonas]

the provided m file does not have the fieldnames you wrote in your question, e,g, neither of of your two structs of CombineOutput has a field PRFStructure

load('matlab (1).mat','CombineOutput')
CombineOutput(1)

ans = struct with fields:
        Prediction: "Class1"
    ValueStructure: [1×4 table]

CombineOutput(1).ValueStructure

ans = 1×4 table
    StagLevels    StagPRFValue    StaggMinimumValue    StaggMaximumValue
    __________    ____________    _________________    _________________

        4         {4×1 double}          6600                 5400       

CombineOutput(2)

ans = struct with fields:
        Prediction: "Class2"
    ValueStructure: [1×5 table]

CombineOutput(2).ValueStructure

ans = 1×5 table
    DSPRFValue      DSlength      Levels    DSmaximum    DSminimum
    ___________    ___________    ______    _________    _________

    1×15 double    1×15 double      4         5600         4400   

edit: to show that the line DOES work

CombineOutput(1).ValueStructure.StagPRFValue{1}

ans = 4×1

5400 5800 6200 6600

[Stephen john]

@Jonas But the solution you share does not work.

This one

CombineOutput(1).ValueStructure.StagPRFValue{1}

[Jonas]

why does it not work? i edited to previous comment to show, that the syntax is right.

Do you get an error, or did you want another output? please be more specific

[Stephen john]

@Jonas i am printing this value in the Textbox in app designer, basically it is not working in that

Answer 2

[Image Analyst]

Assuming your sprintf worked to put the right string into pred, you can send pred to the text label component on the GUI like this

app.PredEditField.Value = pred; % Send pred string to the label on the GUI.

If you have any more questions, then attach your .mlapp code after you read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

[Stephen john]

@Image Analyst it does not work. StagPRFValue for classone does not show in Textbox of .mlapp

[Image Analyst]

So I guess you're saying that your pred is not right because the sprintf() is not properly constructed? Did you see my comment about attaching your .mlapp file?

[Stephen john]

@Image Analyst here is my .mlapp code in which i am facing problem

The dataset attached above which is matlab file which includes Output name CombineOutput

i want to print StagPRFValue in pred 2.

I want to print unique values of DSPRFValue and DS Length in pred1

when i used the above solution it does not work.

for z = 1:3
    
    pred = sprintf('Cluster %1.0f Predicted PRI: %s\n',z,CombineOutput(z).Prediction);
    app.TextArea.Value{z} = pred;

    switch CombineOutput(z).Prediction
        case  "Class 1"
           
            pred1 = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ',CombineOutput(z).ValueStructure.Levels,CombineOutput(z).ValueStructure.DSmaximum,CombineOutput(z).ValueStructure.DSminimum);
            app.TextArea_2.Value = pred1;
        case   "Class 2"


            pred2 = sprintf('Class1 Levels: %d\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n',CombineOutput(z).ValueStructure.StagLevels,CombineOutput(z).ValueStructure.StaggMinimumValue,CombineOutput(z).ValueStructure.StaggMaximumValue);
            app.TextArea_3.Value = pred2;

    end
end

[Image Analyst]

Ok, so you won't attach the .mlapp file with the paperclip icon. We'll see what we can do without it.

Try this:

%s = load('StephenJohn.mat')
%CombineOutput = s.CombineOutput
for z = 1: numel(CombineOutput)
    thisClass = char(CombineOutput(z).Prediction);
    predictedPRI = sprintf('Cluster %1.0f Predicted PRI: "%s".\n',z, thisClass);
    fprintf('For z = %d, %s\n', z, predictedPRI)
    app.TextArea.Value = predictedPRI;
    if contains(thisClass, '1')
        predictedPRI = sprintf('Class1 Levels: %d\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n', ...
            CombineOutput(z).ValueStructure.StagLevels, ...
            CombineOutput(z).ValueStructure.StaggMinimumValue, ...
            CombineOutput(z).ValueStructure.StaggMaximumValue);
        app.TextArea_3.Value = predictedPRI;
    elseif contains(thisClass, '2')
        predictedPRI = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ', ...
            CombineOutput(z).ValueStructure.Levels, ...
            CombineOutput(z).ValueStructure.DSmaximum, ...
            CombineOutput(z).ValueStructure.DSminimum);
        app.TextArea_2.Value = predictedPRI;
    end
end

[Stephen john]

@Image Analyst this is the same code i have used . You have not print StagPRF Value in Class 1 and print unique values of DSPRFValue and DS Length in Class 2.

Have you check the mat file i have attached it consists of these values i want to print these two variable value StagPRF Value in Class 1 and print unique values of DSPRFValue and DS Length in Class 2.

[Image Analyst]

Try this:

s = load('StephenJohn.mat')

s = struct with fields:
    CombineOutput: [1×2 struct]

CombineOutput = s.CombineOutput

CombineOutput = 1×2 struct array with fields:
    Prediction
    ValueStructure

for z = 1: numel(CombineOutput)
    thisClass = char(CombineOutput(z).Prediction);
    predictedPRI = sprintf('Cluster %1.0f Predicted PRI: "%s".\n',z, thisClass);
    fprintf('For z = %d, %s\n', z, predictedPRI)
    app.TextArea.Value = predictedPRI;
    % Get the structure
    str = CombineOutput(z).ValueStructure;
    % Prepare the string.
    if contains(thisClass, '1')
        predictedPRI = sprintf('Class1 Levels: %d\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n', ...
            str.StagLevels, ...
            str.StaggMinimumValue, ...
            str.StaggMaximumValue)
        app.TextArea_3.Value = predictedPRI;
    elseif contains(thisClass, '2')
        predictedPRI = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ', ...
            str.Levels, ...
            str.DSmaximum, ...
            str.DSminimum)
        app.TextArea_2.Value = predictedPRI;
    end
end

For z = 1, Cluster 1 Predicted PRI: "Class1".

predictedPRI = 
    'Class1 Levels: 4
      Maximum Value of Class1:6600
      Minimum Value of Class1:5400
     '

For z = 2, Cluster 2 Predicted PRI: "Class2".

predictedPRI = 
    'Class 2 Levels: 4
      Maximum Value of Class 2:5600
      Minimum Value of Class 2:4400
      '

[Stephen john]

@Image Analyst You have not get my point, The ValueStructure for class 1 has one more variable which is cell name as StagPRFValue ,You are not printing that one, you are only print the remaining three variables.

and for Class 2 ValueStructure consists of two more variable which is DSPRFValue and and DSlength

[Image Analyst]

I'm sure you've figured it out by now. You simply add the variable to the sprintf() statement:

s = load('StephenJohn.mat');
CombineOutput = s.CombineOutput;
for z = 1: numel(CombineOutput)
    thisClass = char(CombineOutput(z).Prediction);
    predictedPRI = sprintf('Cluster %1.0f Predicted PRI: "%s".\n',z, thisClass);
    fprintf('For z = %d, %s\n', z, predictedPRI)
    app.TextArea.Value = predictedPRI;
    % Get the table from the structure.  "ValueStructure" is a field of hte structure and it is a table-type variable.
    tbl = CombineOutput(z).ValueStructure;
    % Prepare the string.
	if contains(thisClass, '1')
		StagPRFValues = tbl.StagPRFValue{1};
		predictedPRI = sprintf('Class1 Levels: %d\n StagePRFValues: [%d, %d, %d, %d]\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n', ...
			tbl.StagLevels, ...
			StagPRFValues, ...
			tbl.StaggMinimumValue, ...
			tbl.StaggMaximumValue)
		app.TextArea_3.Value = predictedPRI;
	elseif contains(thisClass, '2')
		predictedPRI = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ', ...
			tbl.Levels, ...
			tbl.DSmaximum, ...
			tbl.DSminimum)
		app.TextArea_2.Value = predictedPRI;
    end
end

For z = 1, Cluster 1 Predicted PRI: "Class1".

predictedPRI = 
    'Class1 Levels: 4
      StagePRFValues: [5400, 5800, 6200, 6600]
      Maximum Value of Class1:6600
      Minimum Value of Class1:5400
     '

For z = 2, Cluster 2 Predicted PRI: "Class2".

predictedPRI = 
    'Class 2 Levels: 4
      Maximum Value of Class 2:5600
      Minimum Value of Class 2:4400
      '

[Stephen john]

@Image Analyst and for Class 2 ValueStructure consists of two more variable which is DSPRFValue and and DSlength which should be printed you have not printed that.

in this dataset StagPRFValues have four values but they should not always four they should be changed How can i print that

[Image Analyst]

I think you could have figured it out yourself knowing how sprintf() works, but anyway, here is what I got to handle a variable number of elements in the StagPRFValues vector.

s = load('StephenJohn.mat');
CombineOutput = s.CombineOutput;
for z = 1: numel(CombineOutput)
    thisClass = char(CombineOutput(z).Prediction);
    predictedPRI = sprintf('Cluster %1.0f Predicted PRI: "%s".\n',z, thisClass);
    fprintf('For z = %d, %s\n', z, predictedPRI)
    app.TextArea.Value = predictedPRI;
    % Get the table from the structure.  "ValueStructure" is a field of hte structure and it is a table-type variable.
    tbl = CombineOutput(z).ValueStructure;
    % Prepare the string.
    if contains(thisClass, '1')
        predictedPRI = sprintf('Class1 Levels: %d\n\n StagePRFValues: [', tbl.StagLevels);
        StagPRFValues = tbl.StagPRFValue{1};
        numValues = numel(StagPRFValues);
        for k = 1 : numValues
            predictedPRI = sprintf('%s%d ', predictedPRI, StagPRFValues(k));
        end
        predictedPRI = sprintf('%s]\n Maximum Value of Class1:%d\n Minimum Value of Class1:%d\n', ...
            predictedPRI, ...
            tbl.StaggMinimumValue, ...
            tbl.StaggMaximumValue)
        app.TextArea_3.Value = predictedPRI;
    elseif contains(thisClass, '2')
        predictedPRI = sprintf('Class 2 Levels: %d\n Maximum Value of Class 2:%d\n Minimum Value of Class 2:%d\n ', ...
            tbl.Levels, ...
            tbl.DSmaximum, ...
            tbl.DSminimum)
        app.TextArea_2.Value = predictedPRI;
    end
end

I think you should be able to add any additional variables you want to print. If not, see sprintf. If you really can't figure it out based on how I wrote out the other variables, then write back. Otherwise, can you click "Accept this answer."?