MATLAB: Display comma as decimal digits separator in simple 2D plots

commadecimal digits separatorMATLABplotplotting

Is it possible in a simple 2D plot display numbers with comma as decimal digits separator instead of the dot?

Maybe is there a label to add in the xtickformat command?

Best Answer

No, the only way to do that is to build a TickLabels cell array of character vectors, or string object array, containing the characters you want to be displayed.

Related Solutions

MATLAB: How to specify the precision of the tick labels on an axis in MATLAB 7.3 (R2006b)

The ability to specify the precision of the tick labels on an axis is not available in MATLAB 7.3 (R2006b).

To work around this issue, you can retrieve the ticks, convert them to strings with a specified precision, and set the labels to the new tick labels. The following example code can be executed at the MATLAB command prompt, to illustrate this work around:

% Create an example plot.
plot(1:10);
% Query xTick numerical values.
xTick = get(gca,'xTick');
% Create strings out of xTick numerical values with a prescribed precision.
% The format string '%a.bf' means to present the values within a field that
% is wide enough to fit 'a' digits with 'b' digits after the decimal point
% in the format of a 'f'loating point number.
xTickLabel = arrayfun(     ... % arrayfun maps a function onto each member of a cell, one at a time.
    @(x) sprintf('%3.2f',x), ... % Anonymous function acting on each element of xTick.
    xTick,                   ... 
    'uniformoutput', false);     % Option to arrayfun to deal with multiple outputs.
% Use xTickLabel on the plot.
set(gca, 'xTickLabel', xTickLabel);

Note that once the tick labels have been set, they are in manual mode. The tick labels will not update automatically with the resizing of the figure window or zooming in and out of the window.

MATLAB: How to ensure that the decimal separator in the CSV file matches the settings in MS Excel in MATLAB 8.0 (R2012b)

One possibility to accomplish this is to change the MS Excel seetings accordinly before reading the data and afterwards changing those settings back to its original values. For example if the decimal separator in the CSV file is ',' your solution could look as follows:

function [var_1,var_2,var_3] = ImportMeasuredData(ExcelFile)
% Check out the Microsoft office separator configuration on the machine.
MSconfig = actxserver('excel.application'); 
decimal_separator = MSconfig.DecimalSeparator; 
thousand_separator = MSconfig.ThousandsSeparator;
% Change Microsoft office separator configuration to make it compatible with 
% the CSV file (decimal separator must be ',' and thousand separator must be '.').
set(MSconfig, 'DecimalSeparator', ',');
set(MSconfig, 'ThousandsSeparator', '.');
% Import data form the csv file.
clear('var_1','var_2','var_3'); 
var_1 = xlsread(ExcelFile,'B2:B50000'); 
var_2 = xlsread(ExcelFile,'D2:D50000'); 
var_3 = xlsread(ExcelFile,'H2:H50000');
% Reset Microsoft configuration parameters to the origin.
set(MSconfig, 'DecimalSeparator', decimal_separator); 
set(MSconfig, 'ThousandsSeparator', thousand_separator); 
MSconfig.Quit; 
MSconfig.release;
end

Best Answer

Related Solutions

MATLAB: How to specify the precision of the tick labels on an axis in MATLAB 7.3 (R2006b)

MATLAB: How to ensure that the decimal separator in the CSV file matches the settings in MS Excel in MATLAB 8.0 (R2012b)

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