Using Extreme Value Theory and Copulas to Evaluate Market Risk

Hi i have a problem with this code, can help anyone? In atach i send my data. in every time when i run code write "Undefined function or variable 'dates'."

>> % Import daily index closings
>> figure
plot(dates, ret2price(price2ret(Data)))
datetick('x')
xlabel('Date')
ylabel('Index Value')
title ('Relative Daily Index Closings')
legend(series, 'Location', 'NorthWest')
Undefined function or variable 'dates'.
 


>> figure
plot(dates, ret2price(price2ret(Data)))
datetick('x')
xlabel('Date')
ylabel('Index Value')
title ('Relative Daily Index Closings')
legend(series, 'Location', 'NorthWest')
Undefined function or variable 'dates'.
 
>> % Logarithmic returns
>> % # of returns (i.e., historical sample size)
>> index = 1;  % 1 = MSCI, 2 = EEM, 3 = FEM, 4 = IEMG, 5 = JFAM, 6 = LZEM, 7 = SCHE, 8 = VWO,

figure
plot(dates(2:end), returns(:,index))
datetick('x')
xlabel('Date')
ylabel('Return')
title('Daily Logarithmic Returns')
Undefined function or variable 'dates'.
 
>> figure
autocorr(returns(:,index))
title('Sample ACF of Returns')
Undefined function or variable 'returns'.
 
>> 

[Stephan]

Is there some more code, that you missed to show us? Or is that all the code you are using?

[Luan Vardari]

I whant to senctonize for this analyze my data, but i cant, can you help about this, below i sent link fir extreme value theory. I cant load my data for this function.

https://es.mathworks.com/help/econ/examples/using-extreme-value-theory-and-copulas-to-evaluate-market-risk.html

[Stephan]

You do not Import any data. Have a look at xlsread or readtable function. The only code i see is to plot data.