MATLAB Answers

How do I format the number displayed on the "uitable" in App Designer?

42 views (last 30 days)
How do I format the number displayed on the "uitable" in App Designer?

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 4 Aug 2020
Edited: MathWorks Support Team on 4 Aug 2020
There are three workarounds.
1. Use "format" function
You can specify the format of the displayed numbers using the "format" function.
For example:
% Specify the format using 'format' function
format short e
data(:,1)=num2cell((1:10)');
rng(1);
data(:,2)=num2cell(rand(10,1)*1e5);
% Assign data to the table
app.UITable.Data=data;
The format is specified as "short e". The numbers are displayed with short scientific notation with 4 digits after the decimal point.
Please see the attached file "UseFormat.mlapp" for the full example.
For more information about the 'format' function:
2. Use "sprintf" function
If you want to have more control on how the number is displayed, you can use the "sprintf" function to convert a number into a string with a specific format. Then display the string on the table.
For example:
data(:,1)=num2cell((1:10)');
rng(1);
% Specify the format using 'sprintf' function
data(:,2)=arrayfun(@(x)sprintf('%.2e',x),rand(10,1)*1e5,'UniformOutput',false);
% Set 'ColumnFormat' of the 4th column to be 'numeric'
% to align the displayed text to the right
app.UITable.ColumnFormat(2)={'numeric'};
% Assign data to the table
app.UITable.Data=data;
The numbers are displayed with scientific notation with 2 digits after the decimal point.
In the "arrayfun" function, the option "UniformOutput" is specified as false to make the output of the "arrayfun" to be a cell array.
Please see the attached file "UseSprintf.mlapp" for the full example.
For more information about the "sprinft" function:
For more information about the "UniformOutput" option in the "arrayfun" function:
3. Use the "cellfun" function:
If you are already using a table with mixed types, you can convert to a mixed "cell" array and convert back to a table after the formatting and converting to strings is applied for numeric values.
>> t = table;
t.A = {'a';'b';'c'};
t.B = [1.03;5;2.400]
t =
3×2 table
A B
_____ ____
{'a'} 1.03
{'b'} 5
{'c'} 2.4
t = cell2table(cellfun(@(c) num2str(c, '%g'), table2cell(t), 'UniformOutput', false))
t =
3×2 table
Var1 Var2
_____ ________
{'a'} {'1.03'}
{'b'} {'5' }
{'c'} {'2.4' }

  0 Comments

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!