问题
Currently I'm playing around with exporting my data from Netlogo to a CSV file and then loading it into Tableau with the following code..
to write-result-to-file
; if nothing to write then stop
if empty? Result-File [stop]
; Open file
file-open Result-File
; Write into the file
file-print (word Days-passed "," num-susceptible "," num-infected "," num-recovered)
; Close file
file-close
end
Where am running into trouble is when I load the data into tableau it isn't properly picking up the measures/dimensions. Is there a way in Netlogo to specify the headers of each of my rows/columns before they are exported to the CSV file? Is anyone has any experience using tableau and Netlogo I'd really appreciate some help.
回答1:
This question was asked and answered over on NetLogo Users. James Steiner's answer is copied below, with a few typos in the code corrected. It's really quite elegant.
You can print the headers to your results-file during setup!
You might want to make a subroutine to handle all writing to the file, so you don't have to repeat code:
to write-csv [ #filename #items ]
;; #items is a list of the data (or headers!) to write.
if is-list? #items and not empty? #items
[ file-open #filename
;; quote non-numeric items
set #items map quote #items
;; print the items
;; if only one item, print it.
ifelse length #items = 1 [ file-print first #items ]
[file-print reduce [ (word ?1 "," ?2) ] #items]
;; close-up
file-close
]
end
to-report quote [ #thing ]
ifelse is-number? #thing
[ report #thing ]
[ report (word "\"" #thing "\"") ]
end
You would call it with
write-csv "myfilename.csv" ["label1" "label2" "label3"]
to write the column headers in your setup routine, and then
write-csv "myfilename.csv" [10.0 "sometext" 20.3]
to write a row of data - in this case a number, a string, and another number.
来源：https://stackoverflow.com/questions/22462168/netlogo-export-tableau-issues