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jpmml / jpmml-r

Java library and command-line application for converting R models to PMML
GNU Affero General Public License v3.0
33 stars 8 forks source link

jpmml-r .jar file issue #1

Closed ghost321 closed 8 years ago

ghost321 commented 8 years ago

Hi,

I'm trying to convert my gbm model to pmml by changing it into RDS format first and then use command line java to change it into pmml. This is the code i'm using..

saveRDS(model, "model.rds") ## Using R to build a model

java -jar target/converter-executable-1.1-SNAPSHOT.jar --rds-input model.rds --pmml-output model.pmml ## Using java to to convert to pmml in terminal(mac)

However this is the error i get - "Error: Unable to access jarfile target/converter-executable-1.1-SNAPSHOT.jar"

I'm using Java version "1.8.0_65" 64-bit. Any help appreciated.

vruusmann commented 8 years ago

This JAR file does not exist in source checkout. It comes into existence when you build the source checkout locally using Apache Maven: mvn clean install.

If the JAR file exists, but Java cannot access it, then perhaps there's a problem with file permissions? Have you tried chmodding it to 777?

JPMML-R is a developer-oriented project. If you're looking for user-oriented R-to-PMML conversion functionality, then you should consider using the r2pmml package instead.

ghost321 commented 8 years ago

Hi Villu,

I tried using r2pmml also, but I get a java lang error...This is the link to my question on stackoverflow

Could you please let me know what i'm doing wrong. Thanks!

vruusmann commented 8 years ago

I can't find the description of your "java lang error" anywhere.

According to SO, there seems to be an issue with using the r2pmml package on Mac (the culprit is the rJava package, which includes its own (outdated?) Java executable, which "shadows" the system-level Java executable?).

I have just released a new version of the r2pmml package that no longer has the rJava package dependency. Could you re-install the r2pmml package and see if your "java lang error" has been righted? As a bonus, the updated r2pmml package has now full support for multi-class classification gbm and xgb.Booster model objects.

vruusmann commented 8 years ago

Closing as invalid, because there's not enough information/feedback from the user to take extra action.