Can a scrip/function be written to navigate and edit data in the variables editor window using Matlab?

See Title, and if yes, how.

[Sindar]

Why? What do you want to do that can only be done in the variable editor window?

Answer 1

[Mehmed Saad]

Option-1

You can do that using openvar and dbstop

x = rand(1,5);
openvar('x');
dbstop at 4
bpl = 1; % break point line

Now suppose i edited x and change values or add values in it. As the code is in debugging mode, either press F5 on keyboard or Continue from Editor window

y = x*5+0.75;

Option-2

You can create GUI

[Henri Carpentier]

Hi Mehmed,

Thank you for your response. Unfortunately it didn't acctually help me. I understand your code but it only gets me to where I can enter the updated data manually. I already knew how to do that, and after I did that I run a script to perform the calculations I need and get the results I need.

I was just hoping there was a method where I didn't have to manually open the data (in the variables editor window), modify it, and then save it before I ran my script on the data. I wanted to run my scrip where I could enter the new data, have it inserted in the affected variable, at the right location, and continue on with the rest of my script.

I'll keep working on but in the end I might have to bring everything down to the Command Window and have it done there. Oh well. But thank you for trying.

[Mehmed Saad]

You can create an interactive GUI in which you can change the data without stopping the code

[Henri Carpentier]

Hi Again,

I am looking into creating a GUI. I have not done that before and doing so seems interesting so I will look into it and see what is involved. Thank you for your assistance.

[Sindar]

Depending on how consistent your new data will be, a function might be easier:

function y = mean_adjust_x(x_base,idx,new_elems)
%mean_adjust_x takes a vector x_base, replaces elements at indices idx with new_elems
% works with idx and new_elems as matching-length vectors
if max(idx) <= numel(x) && length(idx) == length(new_elems)
    x = x_base;
    x(idx) = new_elems;
% or new_elems being a scalar
elseif max(idx) <= numel(x) && length(new_elems) == 1
    x = x_base;
    x(idx) = new_elems;
% so long as idx is compatible with x_base
else
    error('idx value goes above size of x_base')
end
% do whatever you want to x, in this case taking the mean
y = mean(x);

end

Then you could call it like this:

% create a base x
x = 1:100;
% decide that you'll replace some values with 0
new_elem = 0;
% take the mean replacing the 5th element
y = mean_adjust_x(x,5,new_elem)
% take the mean replacing every 6th element
y = mean_adjust_x(x,[6:6:100],new_elem)

Answer 2

[Henri Carpentier]

Hi Mehmed,

I am still going through your programming suggestion but I went with a script in lieu of a function but I can go either way. I have a 1000 by 10 array of numbers (not a table although I'm rethinking a table may be easier because it permits the use of the "tail" function, which doesn't want to work with my array). I want to go to the 1001 row which is empty and and then enter 10 new numbers and have it saved to that particular variable in the workspace. Since there are so many rows (not considered a tall array yet) I don't want to bring it all into the command window and do what I gotta do because thats a lot of rows to display.

I've been thinking about this problem over the last several days and I think of new things to try every now and then. Maybe my real problem is bringing in the last row or the empty row, to the command window, from my large variable in the workspace, skipping down a row to the empty row, make my entries have it saved to the original variable and not replace it. Or maybe I just want to make the entires in the command window and append/merge it to the end of the appropriate variable in the workspace.

I know I'll figure this our eventually and kick myself because it was so simple to do in the first place. I don't spend much time on this problem because manually I can do what I want to get the results I need, and because I have more fun things to do. But thank you for your responses.