Information on porting graphing scripts between 2.1.x and 2.9/3.0 ?

[Johan Persson]

Hi,

I have a number of (signal processing) scripts that have run well on the 
previous major version 2.1.x. However, after doing some tests with 2.9 I have 
run into formatting problems.

Most the plain (calculating) scripts work fine but I have several problems 
with the plotting in 2.9. I'm using octave with gnuplot 4.0.0

Simple things like formatting an impulse-plot (using FMT "^") or showing a 
step-plot (using FMT "L") does no longer seem to work. I assume that the 
formatting syntax has changed between 2.1 and 2.9 but I cant seem to find any 
information

Is there some updated information available somewhere I might have overlooked 
(or is this maybe a defect)

A trivial example which in Octave 2.9.12 gives errors are

octave:1> plot(1:10,"L")

error: plot: properties must appear followed by a value
error: evaluating if command near line 60, column 6
error: evaluating if command near line 59, column 4
error: evaluating if command near line 57, column 2
error: evaluating if command near line 56, column 7
error: evaluating while command near line 43, column 5
error: evaluating if command near line 30, column 3
error: called from `__plt__' in file 
`/usr/local/octave-2.9/share/octave/2.9.12/m/plot/__plt__.m'
error: evaluating assignment expression near line 182, column 7
error: called from `plot' in file 
`/usr/local/octave-2.9/share/octave/2.9.12/m/plot/plot.m'

Rgds
Johan

P.S Is there some defect tracking system for Octave (besides the bug mailing 
list) its a little bit difficult to get an overview on problem areas from the 
mailing list.