It may be your error or misexpectation.
It would help if you posted a reproducible example.
________________________________
From: Ian Shannon <ian.shan...@environment.nsw.gov.au>
To: "gene...@jsoftware.com" <gene...@jsoftware.com>
Sent: Sunday, December 4, 2016 10:19 PM
Subject: [Jgeneral] Possible bug in AMEND
Hi there,
The following script shows a problem in AMEND using a non-trivial index verb.
I have an array typically read in from tab delimited file and boxed up.
The first 3 columns contain some text and the rest are numeric.
I want to use amend to replace the values each "numeric" column by the
actual numeric values using dyad verb ". (numbers).
I set up indexes for the required columns and pad to the left with boxed
empties to the required dimension. If I use amend with a gerund then the
script produces an index error, however it works fine in various other
possible configurations.
Current J version is 805, but it also occurs in J701.
Ian
Ian Shannon
Science Strategy Branch, Science Division
Office of Environment & Heritage
P: 02 99 955 490
E: Ian<dot>Shannon <at> Environment <dot> NSW <dot> gov <dot> au
W: http <colon> <slash><slash>www <dot> environment <dot> nsw <dot> gov <dot> au
location: 33°57'52.1"S 151°05'41.0"E and 33°52'41.2"S 151°12'23.7"E
==============================================
NB. AmendProblem.ijs
NB. Shows problem with replacing data using "amend" with gerund
smoutput JVERSION
smoutput ''
smoutput 'Script to show amend with gerund error'
data =: (<"0 ] 5 3$'asdfghjkzxcvbnm') ,. ": each <"0 ] 10+i. 5 3
data =: ('';'';'';'z') (2 3; 1 4; 0 1 ;_1 _1) } data
smoutput 'data array'
smoutput data
newData =: [ ".&.> (<'99') replaceEmpty numCols@:] { ]
replaceEmpty =: $@:] $ [ [`(a: I.@:= ])`]} ,@:]
numCols =: [: <@:(a:&;) [: i.&.:(-&3) [: {:@:$ ]
NB. generate the indexes into data of the numeric columns
NB. this is general in that if 2 ~: #$data it will insert sufficient (<a:) into
indexes
numCols =: [: < (<a:) replaceEmpty (_1 * #@:$) {. [: < [: i.&.:(-&3) [: {:@:$ ]
NB. Box (rank data) (indexes along last dim
with numbers)
numColsX=: [: < (<a:) , [: < [: i.&.:(-&3) [: {:@:$ ]
NB. Box (rank data) (indexes along last dim
with numbers)
monad define ''
indexes =: (numCols data) "_
smoutput ' ',:'calculating indexes before and making into a constant verb in
gerund'
dataA =: _99 (newData`indexes`] }) data
smoutput 'SUCCESS: dataA =: _99 (newData`indexes`] }) data'
smoutput ' ',:'calling from directly - no gerund usage'
dataB =: (_99 newData data) (numCols data) } data
smoutput 'SUCCESS: dataB =: (_99 newData data) (numCols data) } data'
smoutput ' ',:'using a simplier index calculation in a gerund'
dataC =: _99 (newData`numColsX`] }) data
smoutput 'SUCCESS: dataC =: _99 (newData`numColsX`] }) data'
try.
smoutput ' ',:'using gerund with full index calculation'
dataD =. 99 (newData`numCols`] }) data
smoutput 'SUCCESS: dataD =: _99 (newData`numCols`] }) data'
catch.
errNo =. 13!:11 ''
errMsg =. 13!:12 ''
smoutput 'FAILURE: dataD =: _99 (newData`numCols`] }) data'
smoutput 'Error number was ', (": errNo), LF,errMsg
end.
)
=========================================================
load 'x:/joling/FromProblem.ijs'
Engine: j805/j64/windows
Beta-12: commercial/2016-09-30T15:50:47
Library: 8.05.02
Qt IDE: 1.4.10/5.4.2
Platform: Win 64
Installer: J805 install
InstallPath: r:/j/j64-805
Contact: www.jsoftware.com
Script to show amend with gerund error
data array
┌─┬─┬─┬──┬──┬──┐
│a│ │d│10│11│12│
├─┼─┼─┼──┼──┼──┤
│f│g│h│13│ │15│
├─┼─┼─┼──┼──┼──┤
│j│k│z│ │17│18│
├─┼─┼─┼──┼──┼──┤
│x│c│v│19│20│21│
├─┼─┼─┼──┼──┼──┤
│b│n│m│22│23│z │
└─┴─┴─┴──┴──┴──┘
calculating indexes before and making into a constant verb in gerund
SUCCESS: dataA =: _99 (newData`indexes`] }) data
calling from directly - no gerund usage
SUCCESS: dataB =: (_99 newData data) (numCols data) } data
using a simplier index calculation in a gerund
SUCCESS: dataC =: _99 (newData`numColsX`] }) data
using gerund with full index calculation
FAILURE: dataD =: _99 (newData`numCols`] }) data
Error number was 6
|index error: script
| dataD=.99 (newData`numCols`]})data
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
This email is intended for the addressee(s) named and may contain confidential
and/or privileged information.
If you are not the intended recipient, please notify the sender and then delete
it immediately.
Any views expressed in this email are those of the individual sender except
where the sender expressly and with authority states them to be the views of
the NSW Office of Environment and Heritage.
PLEASE CONSIDER THE ENVIRONMENT BEFORE PRINTING THIS EMAIL
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
