savefig error in text

Hello,

I am trying to save a plot using the savefig function, however whenever I do this I got the following error:

Error using matlab.graphics.axis.Axes/set While setting the 'FontSize' property of 'Axes': Value not a numeric scalar

function savefig(filename,textSize,titleSize,res,Title,type,inches)
% saveFig(filename,textFontSize,titleFontSize,resolution,Title,type,inches)
% type = 4 for png, 1 = eps


warning('OFF', 'all')
orient portrait
     
% SO YOU DONT LOSE AN AXIS!
subplot('Position', [.98 .98 .01 .01]),axis off

if ~isempty(textSize)
    all_axis = findall(gcf, 'Type', 'Axes');
    set(all_axis, 'Color', 'w', 'XColor', 'k', 'YColor', 'k', ...
        'FontSize', textSize, 'XGrid', 'off', 'YGrid', 'off');
end
if ~isempty(titleSize)
    all_text = findall(gcf, 'Type', 'Text');
    set(all_text, 'FontSize', titleSize, 'FontName', 'Arial');
end

if ~isempty(Title)
    subplot('Position', [.1 .97 .8 .01])
    text(.25, 1, Title, 'FontSize', round(titleSize))
end; axis off; box off;
  
if isempty(inches)
    inches = [17 10];
end

% SET PAPER SIZE
set(gcf, 'papersize', [inches(1) inches(2)])
set(gcf, 'paperposition', [.25 .25 inches(1)-.5 inches(2)-.5])

all_axis = findall(gcf, 'Type', 'Axes'); set(all_axis, 'Linewidth', 3); % all axes

if type == 1
    theFilename = strcat(filename, '.eps');
    eval(['print -f1 -r', num2str(res), ' -loose -dpsc2 -painters ''', theFilename, ''';']);
elseif type == 2
    theFilename = strcat(filename, '.bmp');
    eval(['print -r', num2str(res), ' -loose -dbmp -noui ''', theFilename, ''';']);
elseif type == 3
    theFilename = strcat(filename, '.tif');
    print('-dtiff', ['-r' num2str(res)], theFilename)
elseif type == 4
    theFilename = strcat(filename, '.png');
    eval(['print -r', num2str(res), ' -loose -dpng -noui ''', theFilename, ''';']);
elseif type == 5
    theFilename = strcat(filename, '.jpg');
    eval(['print -r', num2str(res), ' -loose -djpeg -noui ''', theFilename, ''';']);
elseif type == 20
    theFilename = strcat(filename, '.fig');
    savefig(theFilename);
elseif type == 10
    theFilename = strcat(filename, '.pdf');
    eval(['print -r', num2str(res), ' -loose -dpdf -painters ''', theFilename, ''';']);
end

Answer 1

[Jan]

The error message is clear: At least one of the provided values is not a numerical scalar. So how doyou call this function? Check the values of textSize and titleSize.

Your eval commands are ugly. Avoid eval in general.

resStr = sprintf('r%d', res);
switch type
    case 1
      print('-f1', resStr, '-loose', '-dpsc2', '-painters ', [filename, '.eps']);
    case 2
      print(resStr, '-loose', '-dbmp', '-noui', [filename, '.bmp']);
    case 3
      print(resStr, '-dtiff', [filename, '.tif']);
    case 4
      print(resStr, '-loose', '-dpng', '-noui', [filename, '.png']);
    case 5
      print(resStr, '-loose', '-djepg', '-noui', [filename, '.jpg']);
    case 20
      savefig([filename, '.fig');
    case 10
      print(resStr, '-loose', '-dpdf', '-painters', [filename, '.pdf']);
    otherwise
      fprintf(2, 'Unknown print type: %d\n', type)
end

[Jan]

[MOVED from section for answers] Shinobido wrote:

Great, thanks for your reply. I am still having the same error though. When I run this function in another machine it does work.

Also, what shall I do with the code you kindly pasted here? Thanks

[Jan]

Of course you have the same error message, if you do not fix your code. I asked you, how you call this function. One of the inputs textSize or titleSize seems to be not a numerical scalar. Fix this.

You can do with the code I have posted what ever you want to. eval is a really bad idea and causes more troubles then it solves. There is always a better solution, because writing strings to be evaulated as code is too prone to bugs.

Omit the evil warning('OFF', 'all') in addition. Matlab's warnings are very useful. Disabling all of them is a really bad idea. Prefer to remove the source of warnings.