How to display sequence numbers in Matlab in a better way?

matlab, number-formatting

Solution

The only way to do this would be to create your own function to display the arrays in the format you want. For example, if you want to display monotonically-increasing portions of your array in a condensed fashion, you could use a function like this:

function display_array(array)
    str = cellfun(@(n) {num2str(n)}, num2cell(array));
    index = (diff(array) == 1) & ([1 diff(array, 2)] == 0);
    str(index) = {':'};
    str = regexprep(sprintf(' %s', str{:}), '( :)+\s*', ':');
    disp([inputname(1) ' = [' str(2:end) ']']);
end

And you would use it like so:

>> a = [1:5 7 9:11]  %# Define a sample array

a =

     1     2     3     4     5     7     9    10    11     %# Default display

>> display_array(a)
a = [1:5 7 9:11]     %# Condensed display
>> b = [1 2 3 4 4 4 3 2 1];  %# Another sample array
>> display_array(b)
b = [1:4 4 4 3 2 1]  %# Note only the monotonically increasing part is replaced

Problem

For example, I have an array: ``` a=[1:5 8:10]; ``` If I display it using: ``` disp(['a = ' num2str(a)]); ``` The result would be something like a = 1 2 3 4 5 8 9 10 It's quite too long than I need. How can I let Matlab to display as same as the way I defined it or as close as is? Be more specific, if I defined the variable in an "informal" way like: ``` a=[1:3 4:6 8:10] ``` (should be normally 1:6 instead of 1:3 4:6) I just want Matlab to display in either way: ``` 1:3 4:6 8:10 or 1:6 8:10 ``` I also not care about whether it displays the variable name or square brackets. Searched but didn't find anything useful. Considered to manually parse it but doesn't sounds like a clever way. Any suggestion would be great helpful, thanks a lot.

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