MATLAB: Error in scatter program

plotprogrammingscatter

Hi,

I am trying to plot the x and y variables in 'scatter' mode which is pre-defined in the MATLAB.

This is the error

Undefined function or variable "s".
Error in ==> scatter at 74
  if isempty(s), s = 36; end

Can anyone please help me to get solved by this problem.

Thank you

Best Answer

It is not valid to pass only a single argument to scatter(). The minimum you can pass is two arguments, X and Y.

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MATLAB: Scatter plot with different marker types

The scattergroup property name is marker

See

doc scatter

for the details...

MATLAB: Check if a number of varibles in a function satifies a condition.

There are already tools for performing these tasks. Check out the InputParser class [ ref, ref ]. It will allow you to declare three sets of arguments: required, optional, and param/value pairs. For each parameter, you will be able to define a check function, as well as a default value for all but required parameters.

EDIT: just as an example, here is the beginning of a function using an input parser

 function [hFig, hAxis, hLegend, hPatches] = bar_varWidth( colWidth, ...
    data, varargin )
    % --- 1. Parse input parameters.
    parser = inputParser ;
    parser.StructExpand  = true ;
    parser.CaseSensitive = false ;
    parser.addRequired( 'colWidth', @isnumeric ) ;
    parser.addRequired( 'data', @isnumeric ) ;
    parser.addParamValue( 'legend', [], @(x) ischar(x) || iscell(x)  ) ;
    parser.addParamValue( 'xTickLabel', [], @(x) isnumeric(x) || iscell(x)  ) ;
    parser.addParamValue( 'xTickLabelFormat', '%.2f', @ischar ) ;
    parser.addParamValue( 'xTickLabelShiftThreshold', 10, @isnumeric ) ;
    parser.addParamValue( 'xTickLabelAngle', 90, @isnumeric ) ;
    parser.addParamValue( 'xTickLabelLineLength', [], @isnumeric ) ;
    parser.parse( colWidth, data, varargin{:} ) ;
    args = parser.Results ;
    % --- 2. ...

and here all parameters are accessible as fields of args, e.g.

    args.colWidth
    args.legend

Best Answer

Related Solutions

MATLAB: Scatter plot with different marker types

MATLAB: Check if a number of varibles in a function satifies a condition.

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