Thread Subject:

workspace bytes to MB

Hi to everyone,
I'd like to display the memory used by the variables in the workspace pane in MB instead of bytes.
Do you know of any way to accomplish this? Maybe Yair has some tricks up in his sleeve...

Thanks and happy new year!

Oleg

"Oleg Komarov" <oleg.komarov@hotmail.it> wrote in message <hhfv2k$27s$1@fred.mathworks.com>...
> Hi to everyone,
> I'd like to display the memory used by the variables in the workspace pane in MB instead of bytes.
 =================

I'd like to know even just how to display them in bytes. My Workspace pane only displays Name, Value, Min, & Max


Anyway, it may not be quite what you're after but the function below does something similar


Example:

X=rand(3000);

>> meg X

ans =

   68.6646


function mem=meg(varargin)
%
%Issuing the command MEG returns the number of megabytes of used memory
%as tracked by WHOS().
%
%MEG X Y will display the memory in MB consumed (according to whos) by variables X %and Y

if nargin==0

  cmdstr=['whos;'];
  s=evalin('caller', cmdstr) ;

else


 in=['''' varargin{1} ''''];

 numargs=length(varargin);
 
 if numargs>1
   for ii=2:numargs
     in= [in ',' '''' varargin{ii} ''''];
   end
 end

 cmdstr=['whos(' in ');'];

 
 s=evalin('caller', cmdstr) ;

end

if length(s)<1, mem=0; return; end

c=cell(1,length(s));
[c{:}]=deal(s.bytes);
c=vertcat(c{:});
mem=sum(c)/2^20;

"Matt J "
> function mem=meg(varargin)
> %
> %Issuing the command MEG returns the number of megabytes of used memory
> %as tracked by WHOS().
> %
> %MEG X Y will display the memory in MB consumed (according to whos) by variables X %and Y

another, slightly more versatile approach...
- note the enhanced possibility to input a var

%SYNTAX
%---------------------------------
% MEB x y* 'zz';
% MEB('x',zzz,'y*');
%
function r=meb(varargin)
     mb=2^20;
     in='';
if nargin
     arg=varargin;
     ix=~cellfun(@ischar,arg);
     in=arrayfun(@inputname,find(ix),'uni',false);
     arg(ix)=in;
     arg=unique(arg);
     in=sprintf('''%s'',',arg{:});
     in(end)='';
end
% get/convert var name/size
     com=['whos(',in,');'];
     s=evalin('base',com);
     sn={s.name}.';
     sb=cat(1,s.bytes)./mb;
     r=[sn,num2cell(sb)].';
% beautify output
     tl=1+max(cellfun('length',sn));
     bl=1+max(ceil(log10(sb)));
     fm=sprintf('%%-%ds %%%d.2f MB\n',tl,bl);
     r=sprintf(fm,r{:});
     disp(r);
if ~nargout
     clear r;
end
end

but: this is probably NOT what the OP is looking for...
us

"us " <us@neurol.unizh.ch> wrote in message <hhgfdo$baf$1@fred.mathworks.com>...
> "Matt J "
> > function mem=meg(varargin)
> > %
> > %Issuing the command MEG returns the number of megabytes of used memory
> > %as tracked by WHOS().
> > %
> > %MEG X Y will display the memory in MB consumed (according to whos) by variables X %and Y
>
> another, slightly more versatile approach...
> - note the enhanced possibility to input a var


Sorry, I'm not seeing the increased versatility you mention, only a difference in the format of the output. (My version also took vars as input.)

"Matt J " <mattjacREMOVE@THISieee.spam> wrote in message <hhghfa$j9e$1@fred.mathworks.com>...
> "us " <us@neurol.unizh.ch> wrote in message <hhgfdo$baf$1@fred.mathworks.com>...
> > "Matt J "
> > > function mem=meg(varargin)
> > > %
> > > %Issuing the command MEG returns the number of megabytes of used memory
> > > %as tracked by WHOS().
> > > %
> > > %MEG X Y will display the memory in MB consumed (according to whos) by variables X %and Y
> >
> > another, slightly more versatile approach...
> > - note the enhanced possibility to input a var
>
>
> Sorry, I'm not seeing the increased versatility you mention, only a difference in the format of the output. (My version also took vars as input.)

an example

     x=rand(1000);
     y=x;
     yy=x(1:500,1:500);
% MEB
     meb('x','y*'); % <- works as expected...
     meb(x,yy,'y'); % <- works as well...
% MEG
     meg('x','y*') % <- works as expected...
     meg(x,yy,'y') % <- does NOT work...

just a thought
us

"us " <us@neurol.unizh.ch> wrote in message <hhgimm$62h$1@fred.mathworks.com>...

> % MEB
> meb('x','y*'); % <- works as expected...
> meb(x,yy,'y'); % <- works as well...
> % MEG
> meg('x','y*') % <- works as expected...
> meg(x,yy,'y') % <- does NOT work...
>

Ah. Okay.

Anyway, sorry we're not being of more help to you, Oleg (except perhaps by continually bumping this thread) :-)

> but: this is probably NOT what the OP is looking for...
> us
Definitely not...I'm refering to the interface itself. The workspace pane has the option to display the size as a detail of the variable itself without the use of any command.
Since this detail (at least from the R2008a ver) is expressed in bytes it loses meaning when the variables grow big.

Oleg

Thanks to Matt J and us for the replies.
I've submitted and enhacement request and in the meantime i'll implement the suggested solutions.

Oleg

And this is the solution proposed by the support:

% WSSIZE Display size of variables in the base workspace using B, KB, MB and GB

function wssize
% Obtain base workspace contents
    ws_contents = evalin('base', 'whos');
    % Loop through contents and display size on screen
    for i = 1:length(ws_contents)
        cur_size = ws_contents(i).bytes;
        if cur_size > 1024^3;
            fprintf('%-15s: %8.3f GB\n', ws_contents(i).name, cur_size/1024^3);
        elseif cur_size > 1024^2;
            fprintf('%-15s: %8.3f MB\n', ws_contents(i).name, cur_size/1024^2);
        elseif cur_size > 1024;
            fprintf('%-15s: %8.3f KB\n', ws_contents(i).name, cur_size/1024);
        else
            fprintf('%-15s: %8.3f B\n', ws_contents(i).name, cur_size);
        end
    end
end

Oleg

"Oleg Komarov" <oleg.komarov@hotmail.it> wrote in message <hhi8t3$2sj$1@fred.mathworks.com>...
> And this is the solution proposed by the support:
>
> % WSSIZE Display size of variables in the base workspace using B, KB, MB and GB
>
> function wssize
> % Obtain base workspace contents
> ws_contents = evalin('base', 'whos');
> % Loop through contents and display size on screen
> for i = 1:length(ws_contents)
> cur_size = ws_contents(i).bytes;
> if cur_size > 1024^3;
> fprintf('%-15s: %8.3f GB\n', ws_contents(i).name, cur_size/1024^3);
> elseif cur_size > 1024^2;
> fprintf('%-15s: %8.3f MB\n', ws_contents(i).name, cur_size/1024^2);
> elseif cur_size > 1024;
> fprintf('%-15s: %8.3f KB\n', ws_contents(i).name, cur_size/1024);
> else
> fprintf('%-15s: %8.3f B\n', ws_contents(i).name, cur_size);
> end
> end
> end
>
> Oleg

wow! what a smart solution - yet, still NOT what you were asking for...

us

> wow! what a smart solution - yet, still NOT what you were asking for...
>
> us
Yes i know but they've submitted an enhancement request to the developers.
Anyway this solution (and the one you proposed) is much faster than googling '76537543 bytes to MB' :)

Oleg

"Oleg Komarov" <oleg.komarov@hotmail.it> wrote in message <hhfv2k$27s$1@fred.mathworks.com>...
> Hi to everyone,
> I'd like to display the memory used by the variables in the workspace pane in MB instead of bytes.
> Do you know of any way to accomplish this? Maybe Yair has some tricks up in his sleeve...
>
> Thanks and happy new year!
>
> Oleg


I couldn't resist the challenge...
http://UndocumentedMatlab.com/blog/customizing-matlabs-workspace-table/

Enjoy :-)

Yair Altman
http://UndocumentedMatlab.com