how to fix error for unrecognized function.

Question

Juan 2024-2-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085198-how-to-fix-error-for-unrecognized-function

评论： Walter Roberson 2024-2-22

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);

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Juan 2024-2-22

Walter Roberson 2024-2-22

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

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Answer 1

bo zhang 2024-2-22

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https://ww2.mathworks.cn/matlabcentral/answers/2085198-how-to-fix-error-for-unrecognized-function#answer_1413968

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.