Having trouble calling a user defined function.

I am trying to create a user defined function with 3 outputs and 3 inputs. 2 of the inputs are tables loaded into matlab and 1 input is a scalar. For the function i have to find the average of values within the correct table in the correct rows. When calling the function (which IS saved in the same folder as my script) i recieve the error message "Undefined function 'Function Name' for input arguments of type 'double'.". I have also tried calling the function with ".m" after the function name and recieve the error message "Unable to resolve the name Function Name.m."

My calling code looks like:

load TableOne.mat
load TableTwo.mat
%the two tables given in the problem have been loaded

%The rows with -999 are found in the tables given.
Table1=find(any(TableOne==-999,2));
Table2=find(any(TableTwo==-999,2));

%Now the rows with the value -999 will be deleted from the original tables.
TableOne(Table1,:) = [];
TableTwo(Table2,:) = [];
%This completes part A.

year=1988;
[PH, Ocean_CO2, Atmospheric_CO2] = OceanValues(TableOne,TableTwo,year)

My function code looks like :

function [avgOpH, avgOCO2, AtmCO2] = OceanValues(TableOne,TableTwo, year)

%first i must find all of the rows with the given year
rows=find(any(TableOne(1,:)==year,2));
%now find the mean of the values in the 2nd column in those rows 
avgOpH=mean(TableOne(rows,2));

%now the same process is repeated for avgOCO2 using the same rows
avgOCO2=mean(TableOne(rows,3));

%the entire process is repeated with TableTwo for AtmCO2
rows2=any(TableTwo(1,:)==year,2);

AtmCO2=mean(TableTwo(rows2,2));

end

[Walter Roberson]

what filename is OceanValues stored in? And is it in the same directory as the script?

Answer 1

[Chunru]

TableOne = array2table([1988*ones(10,1)  randn(10, 2)])

TableOne = 10×3 table
    Var1      Var2         Var3  
    ____    _________    ________

    1988      -1.3587     0.96571
    1988    -0.051183     0.52129
    1988     -0.24208    0.084785
    1988      0.18565    -0.40847
    1988      0.82144     0.47357
    1988     -0.57997     -0.6643
    1988      0.91027      1.2193
    1988      0.45075     0.46629
    1988     -0.64644     0.13469
    1988     -0.46244      1.4856

TableTwo = array2table([1988*ones(10,1)  randn(10, 2)])

TableTwo = 10×3 table
    Var1       Var2         Var3   
    ____    __________    _________

    1988       0.36402     -0.47557
    1988       0.29267      0.45105
    1988        1.4554     -0.74368
    1988       0.81959       1.8582
    1988      -0.55901      -1.7741
    1988      0.035874    -0.061666
    1988    -0.0097175      0.55582
    1988      -0.22102       1.5379
    1988      -0.25946     0.060444
    1988       0.96491       0.3208

%This completes part A.
year=1988;

[PH, Ocean_CO2, Atmospheric_CO2] = OceanValues(TableOne,TableTwo,year)

PH = -1.3587

Ocean_CO2 = 0.9657

Atmospheric_CO2 = 0.3640

% Pay attention to the difference of () and {} in accessing table
% The following code has been corrected
function [avgOpH, avgOCO2, AtmCO2] = OceanValues(TableOne,TableTwo, year)
%first i must find all of the rows with the given year
rows=find(any(TableOne{1,:}==year,2));
%now find the mean of the values in the 2nd column in those rows 
avgOpH=mean(TableOne{rows,2});
%now the same process is repeated for avgOCO2 using the same rows
avgOCO2=mean(TableOne{rows,3});
%the entire process is repeated with TableTwo for AtmCO2
rows2=any(TableTwo{1,:}==year,2);
AtmCO2=mean(TableTwo{rows2,2});
end

[Angela Gugliotta]

Thank you, but that didn't seem to help

[Chunru]

So what help do you need?