Plot two columns from a table error

plot( t.x, t.y );

Output:

Error using plot

Too many input arguments.

Where t.x and t.y are 50000x1 double

Answer 1

[Image Analyst]

What do these next 2 lines show in your command window?

whos t
which -all plot

built-in (/MATLAB/toolbox/matlab/graph2d/plot)
/MATLAB/toolbox/matlab/graphics/math/@digraph/plot.m            % digraph method
/MATLAB/toolbox/matlab/graphics/math/@graph/plot.m              % graph method
/MATLAB/toolbox/matlab/timeseries/@timeseries/plot.m            % timeseries method
/MATLAB/toolbox/matlab/graphics/math/@polyshape/plot.m          % polyshape method
/MATLAB/toolbox/matlab/graphics/math/@alphaShape/plot.m         % alphaShape method
/MATLAB/toolbox/matlab/bigdata/@tall/plot.m                     % tall method
/MATLAB/toolbox/bioinfo/bioinfo/@phytree/plot.m                 % phytree method
/MATLAB/toolbox/bioinfo/microarray/@HeatMap/plot.m              % HeatMap method
/MATLAB/toolbox/bioinfo/microarray/@clustergram/plot.m          % clustergram method
/MATLAB/toolbox/curvefit/curvefit/@cfit/plot.m                  % cfit method
/MATLAB/toolbox/curvefit/curvefit/@sfit/plot.m                  % sfit method
/MATLAB/toolbox/econ/econ/@conjugateblm/plot.m                  % conjugateblm method
/MATLAB/toolbox/econ/econ/@diffuseblm/plot.m                    % diffuseblm method
/MATLAB/toolbox/econ/econ/@mixconjugateblm/plot.m               % mixconjugateblm method
/MATLAB/toolbox/econ/econ/@lassoblm/plot.m                      % lassoblm method
/MATLAB/toolbox/econ/econ/@mixsemiconjugateblm/plot.m           % mixsemiconjugateblm method
/MATLAB/toolbox/econ/econ/@empiricalblm/plot.m                  % empiricalblm method
/MATLAB/toolbox/econ/econ/@blm/plot.m                           % blm method
/MATLAB/toolbox/econ/econ/@customblm/plot.m                     % customblm method
/MATLAB/toolbox/econ/econ/@semiconjugateblm/plot.m              % semiconjugateblm method
/MATLAB/toolbox/ident/ident/@iddata/plot.m                      % iddata method
/MATLAB/toolbox/ident/nlident/@idnlarx/plot.m                   % idnlarx method
/MATLAB/toolbox/ident/nlident/@idnlhw/plot.m                    % idnlhw method
/MATLAB/toolbox/mpc/mpc/@mpc/plot.m                             % mpc method
/MATLAB/toolbox/robust/rctobsolete/robust/@frd/plot.m           % frd method
/MATLAB/toolbox/robust/robust/@umargin/plot.m                   % umargin method
/MATLAB/toolbox/shared/channel/rfprop/@propagationData/plot.m   % propagationData method
/MATLAB/toolbox/shared/drivingscenario/@drivingScenario/plot.m  % drivingScenario method
/MATLAB/toolbox/signal/signal/@dspdata/plot.m                   % dspdata method
/MATLAB/toolbox/stats/bayesoptim/@BayesianOptimization/plot.m   % BayesianOptimization method
/MATLAB/toolbox/stats/classreg/@LinearModel/plot.m              % LinearModel method
/MATLAB/toolbox/wavelet/wavelet/@dtree/plot.m                   % dtree method
/MATLAB/toolbox/wavelet/wavelet/@wdectree/plot.m                % wdectree method
/MATLAB/toolbox/wavelet/wavelet/@ntree/plot.m                   % ntree method

x = [1:5000]';
y = sin(2 * pi * x / 1000);
t = table(x, y)

t = 5000×2 table
    x         y    
    __    _________

     1    0.0062831
     2     0.012566
     3     0.018848
     4      0.02513
     5     0.031411
     6      0.03769
     7     0.043968
     8     0.050244
     9     0.056519
    10     0.062791
    11      0.06906
    12     0.075327
    13     0.081591
    14     0.087851
    15     0.094108
    16      0.10036

plot(t.x, t.y); % See  No error if you do it right.

[Niko]

I restarted Matlab and it started to work... Thank you for the answer tho.

[Image Analyst]

Too bad you didn't use "which" like I said. You must have had your own version of plot that you defined somehow. When you restarted MATLAB you didn't define your own version that time and so it used the default buil-in version of plot(), which works.

[Niko]

interesting...

So this is what I get from which

built-in (C:\Program Files\MATLAB\R2022b\toolbox\matlab\graph2d\plot)

C:\Program Files\MATLAB\R2022b\toolbox\matlab\bigdata\@tall\plot.m % tall method

C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphics\math\@alphaShape\plot.m % alphaShape method

C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphics\math\@digraph\plot.m % digraph method

C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphics\math\@graph\plot.m % graph method

C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphics\math\@polyshape\plot.m % polyshape method

C:\Program Files\MATLAB\R2022b\toolbox\matlab\timeseries\@timeseries\plot.m % timeseries method

C:\Program Files\MATLAB\R2022b\examples\wavelet\data\@edwttree\plot.m % edwttree method

C:\Program Files\MATLAB\R2022b\examples\wavelet\data\@rwvtree\plot.m % rwvtree method

C:\Program Files\MATLAB\R2022b\examples\wavelet\data\@wvtree\plot.m % wvtree method

C:\Program Files\MATLAB\R2022b\toolbox\bioinfo\bioinfo\@phytree\plot.m % phytree method

C:\Program Files\MATLAB\R2022b\toolbox\bioinfo\microarray\@clustergram\plot.m % clustergram method

C:\Program Files\MATLAB\R2022b\toolbox\bioinfo\microarray\@HeatMap\plot.m % HeatMap method

C:\Program Files\MATLAB\R2022b\toolbox\coder\half\@half\plot.p % half method

C:\Program Files\MATLAB\R2022b\toolbox\curvefit\curvefit\@cfit\plot.m % cfit method

C:\Program Files\MATLAB\R2022b\toolbox\curvefit\curvefit\@sfit\plot.m % sfit method

C:\Program Files\MATLAB\R2022b\toolbox\ident\ident\@iddata\plot.m % iddata method

C:\Program Files\MATLAB\R2022b\toolbox\ident\nlident\@idnlarx\plot.m % idnlarx method

C:\Program Files\MATLAB\R2022b\toolbox\ident\nlident\@idnlhw\plot.m % idnlhw method

C:\Program Files\MATLAB\R2022b\toolbox\robust\rctobsolete\robust\@frd\plot.m % frd method

C:\Program Files\MATLAB\R2022b\toolbox\robust\robust\@umargin\plot.m % umargin method

C:\Program Files\MATLAB\R2022b\toolbox\shared\channel\rfprop\@propagationData\plot.m % propagationData method

C:\Program Files\MATLAB\R2022b\toolbox\signal\signal\@dspdata\plot.m % dspdata method

C:\Program Files\MATLAB\R2022b\toolbox\stats\classreg\@LinearModel\plot.m % LinearModel method

C:\Program Files\MATLAB\R2022b\toolbox\wavelet\wavelet\@dtree\plot.m % dtree method

C:\Program Files\MATLAB\R2022b\toolbox\wavelet\wavelet\@ntree\plot.m % ntree method

C:\Program Files\MATLAB\R2022b\toolbox\wavelet\wavelet\@wdectree\plot.m

[Image Analyst]

Yeah, that all looks fine. They're just overloaded versions of plot. But you don't want to see something like

c:\users\NIKO\Documents\matlab\work\plot.m

which is some version of your own creation.