why my variable value become these sysbols?

InfoImage = imfinfo(filename);

Width = InfoImage.Width;

Height = InfoImage.Height;

app.SizeImageEditField.Value = [Width,'x',Height];

This is my code. Thanks.

Answer 1

[Les Beckham]

Probably because Width and Height are not character vectors, but numeric doubles instead.

Try this:

InfoImage = imfinfo(filename);
Width = num2str(InfoImage.Width);
Height = num2str(InfoImage.Height);
app.SizeImageEditField.Value = [Width,'x',Height];

[JI RONG]

Thank you! Help much for me.

[Les Beckham]

You are quite welcome.

Answer 2

[Steven Lord]

When you concatenate together a char vector and a number, MATLAB does not convert the number into its character representation. It converts it into a character based on its value. From the display and some guess and check on the Unicode tables I'm guessing your image is somewhere around 1670 columns wide? I haven't tried to look for the width character.

x = 0x686

x = uint16 1670

c = char(x)

c = 'چ'

If you want to combine text data and numeric data and have the number converted to its character representation, one easy way to do that is to use a string array and the + operator (which for string arrays is concatenation.)

s = 1670 + " x " + 800

s = "1670 x 800"