Use fprintf for data from a table

if I have data from a mat file say

3 7 2005 30 %1st 3 columns are day month year print loss 
1 4 2005 35
1 5 2005 24
2 6 2005 25
.....

% I have code that gets the data I want say index= [1;2;4] and values=[10;20;30] Id like to print the date and value corresponding 
%the index and value 

How would I use fprintf or disp to get something like

'One of the 3 big losses occurs on the 3rd of July 2005 with a loss of 30' %Is it possible to write it as something like 
'One of the 3 big losses occurs on the data(i,index(1)) of data(i,index(2)) data(i,index(3)) with a loss of values(3)'

Answer 1

[Star Strider]

Try this:

M = [3 7 2005 30
     1 4 2005 35
     1 5 2005 24
     2 6 2005 25];

MDate = datetime(M(:,3),M(:,2),M(:,1));
% MDates = cellstr(MDate);                                        % Optional
for k = 1:size(M,1)
    fprintf('One of the 3 big losses occurs on %s with a loss of %d\n', MDate(k), M(k,4))
end

The loop is necessary, since fprintf has different variable types (datetime and double) in its arguments.

[jacob Mitch]

Hi there thank you for your help as it helping me understand. Is it possible to adjust this line because I have

index=[1;2;4]
value =[30;35;25]
 %Is it possible adjust it to print based on what the above says, 
 %as the data is changing say something like for 
 


'One of the 3 big losses occurs on %s with a loss of %d\n', MDate(index(1)), value(1)
'One of the 3 big losses occurs on %s with a loss of %d/n', Mdate(index(2)), value(2)

But it just prints

ans =

One of the 3 big losses occurs on %s with a loss of %d\n

ans =

datetime

3-Jul-2005

ans =

30

I really appreciate your help. Thank you

[Star Strider]

My pleasure.

So long as ‘index’ are integers greater than 0 and address existing rows in ‘M’, this will work:

index = [1;2;4];
value = [30;35;25];
for k = 1:numel(index)
    fprintf('One of the 3 big losses occurs on %s with a loss of %d\n', MDate(index(k)), value(k))
end

(I did not re-post ‘M’ and ‘MDate’ here. I assume they already exist in your workspace.)

[jacob Mitch]

This is absolutely perfect, thank you so much

[Star Strider]

As always, my pleasure!