How to change regular attribute by appending macro and use that attribute for calculation

sgnarkhede2016

Hello,

I have the regular attribute name  "atttribute_W" , the W is coming from my macro and append to  atttribute 
next time regular attribute changes to "atttribute_Y" as per my config macro

When I am using this in generate attribute for calculation I getting error "erroneous expression"
Value_%{macro1}                if (Profile=="High",attribute_%{maco1}*100,
                                             if (Profile=="Medium",attribute_%{maco1}*200,
                                             attribute_%{maco1}*300))

sgnarkhede2016

Its work for me before I did not use quotes for attributes names that's why not working
round(eval("AARPI_TXN_SD_CNT_"+%{initial}))

varunm1

Hello @sgnarkhede2016

Can you provide your process as .rmp file? You can export from rapidminer using File --> Export process and attach it here. Also, did you check if macro names are correct?

Marco_Barradas

Hi @sgnarkhede2016 if you what to use the value of the macro you need to use eval(%macro_name) and you'll also need to use concatenate if you expect to have macro=10 to obtain attribute_10

sgnarkhede2016

It works only for the attribute name "check_%{initial}"  but when used in expression it won't work.
check_%{initial}   score_%{initial}
e.g.
score_%{initial} is already calculated in example set i want to calculate the score on that value but %{initial} changes to W, M,HY(week,Month..) as per iteration.
I tried Concat but it not working for me

sgnarkhede2016

Its work for me before I did not use quotes for attributes names that's why not working
round(eval("AARPI_TXN_SD_CNT_"+%{initial}))