We are wondering why it crashes J on some systems.
Henry Rich
On 3/24/2020 6:51 PM, Devon McCormick wrote:
Sorry - typo. Last line of J should have been
13!:0]0 NB. turn off debugging
On Tue, Mar 24, 2020 at 5:38 PM Devon McCormick <[email protected]> wrote:
Hi - I did this:
load 'plot'
13!:0]1 NB. Enable debugging
plot 1 2;3 4 5
|length error: getgrafmat
| ,"2(getgrafx x) ,."1 citemize getgrafy y
|getgrafmat[1]
y
3 4 5
x
1 2
13!:0]10 NB. turn off debugging
So, this is a legitimate error caused by the bad input "1 2;3 4 5". Try
using a better input like "1 2 3;4 5 6".
Regards,
Devon
On Tue, Mar 24, 2020 at 5:09 PM Rudolf Sykora <[email protected]> wrote:
Dear Henry,
Henry Rich <[email protected]> writes:
I did look into it a little, and you could do the same. This is what I
did (in JQt):
plot 1 2 ; 3 4 5
crash - before the crash a dialog about length error in getgrafmat.
Indeed, the arguments have incorrect length.
load 'plot'
open 'plot'
seems to use jzplot
open'jzplot'
ahh, there's the source. Look for getgrafmat. It is:
getgrafmat=: 3 : 0
'x y'=. 2 {. y { Data
,"2 (getgrafx x) ,."1 citemize getgrafy y
)
Perhaps it dies right there. Let's see. Change the function to:
getgrafmat=: 3 : 0
'x y'=. 2 {. y { Data
'1' 1!:2 <'C:/JPrograms/errfile.txt'
res =. ,"2 (getgrafx x) ,."1 citemize getgrafy y
'2' 1!:2 <'C:/JPrograms/errfile.txt'
res
)
<lots of blundering around omitted>
plot 1 2 ; 3 4 5
crash - errfile.txt has been created, containing '1'.
Thus the system crashed, presumably in JQt, displaying the dialog for
the length error.
I did what you write with the exactly same result. There is '1' in the
errfile.txt.
Try reinstalling. If it still fails report again. Make sure you
report
you system version and JQt version.
So I tried and reinstalled j901. It still crashes.
Window 10 Pro, x64-based processor, Intel Core i5-8250U.
1.0.193 is the version of the 'plot' addon.
in About I read:
Engine: j901/j64avx2/windows
Release-e: commercial/2020-01-29T11:17:19
Library 9.01.21
Qt IDE 1.8.6.s/5.12.7(5.12.7)
Platform Win64
Thanks,
Ruda
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Devon McCormick, CFA
Quantitative Consultant
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