I'm trying to generate an a trend attribute.
unixtime, price, amount
1,3,5
2,5,7
....
I apply windowing, which creates these new attributes
price-0, price-1, price-2 ...
Next I try to generate a trend attribute so I use this expression
if(label>price-9,1,if(label==price-9,0,-1))
Pronlem is Rapidminer interprets price-9 as price minus 9, instead of the variable name. I can't change the variable names, because they are generated by RapidMiner in the windowing. How can I fix this?
you can change the attribute names with the Rename by Replace operator. Just enter something like '-' into the replace_what parameter, and '_' into replace_by.
Best,
Marius