how to fix error for unrecognized function.

function [eqPrice, clearedBuyQuantity, clearedSellQuantity, socialWelfare] = marketClearing(buyPrice,buyQuantity,sellPrice,sellQuantity)
nBuyOrders = length(buyPrice);
nSellOrders = length(sellPrice);
cvx_begin
variable clearedBuyQuantity(nBuyOrders);
variable clearedSellQuantity(nSellOrders);
dual variable eqPrice;
minimize(sellPrice*clearedSellQuantity-buyPrice*clearedBuyQuantity);
subject to
0 <= clearedBuyQuantity <= buyQuantity;
0 <= clearedSellQuantity <= sellQuantity;
eqPrice : sum(clearedSellQuantity) - sum(clearedBuyQuantity) == 0;
cvx_end
socialWelfare = -cvx_optval;
bus1Data = readmatrix(p1Bus1Data.csv);
bus2Data = readmatrix(p1Bus2Data.csv);

[James Tursa]

Please post the entire error message. What you have posted doesn't even look like valid MATLAB syntax.

[Juan]

[Walter Roberson]

You need to have defined values for buyPrice, buyQuantity, sellPrice, and sellQuantity before you call the function.

Answer 1

[bo zhang]

When you try to run the ‘marketClearing.m’ file directly, your MATLAB workspace does not have the input variables for the function. So the error message shows that the function or variables are unrecogized. You need to find and run the main function file that calls the 'marketClearing' function.

From your code, it is also evident that the MATLAB CVX toolbox is necessary if you want to run this code properly.