Fernando,
Fernando Roig wrote:
LyX displays the ppm file but not properly. I mean, it appears an image
on the screen, but this image has less to do with the original ps
figure. Therefore, ImageMagick is converting the ps file into a ppm file
containing some strange information that LyX is able to display but GIMP
is not able to open ("plugin cannot open image")
This may have to do with a character encoding issue; see below.
If I run
convert figure1.ps figure1.jpg
and then
convert figure1.jpg figure1.ppm
then both jpg and ppm files are correctly converted (I am able to open
them in GIMP) and LyX displays the ppm file without problems. However,
if I try to load the jpg file in LyX then I get the "Error converting to
loadable format". So I believe that the problem is not with Ghostscript.
I'm not sure if this is consistent with an encoding problem, but possibly.
Here is the debug log (it is quite a lot of stuff):
[...]
[graphics::CacheItem::Impl::convertToDisplayFormat]
Attempting to convert image file: C:/TEST/figure1.ps
with displayed filename: C:\TEST\figure1.ps
Recognised Fileformat: eps
The file contains eps format data.
I think this is ok, particularly if your figure1.ps is actually an EPS file.
The image loader can load the following directly:
bmp, pbm, pgm, png, ppm, xbm, xpm,
Of these, LyX recognises the following formats:
bmp, pbm, pgm, png, ppm, xbm, xpm
Unable to convert from eps to bmp
Unable to convert from eps to pbm
Unable to convert from eps to pgm
Converting it to png format.
The next error (which occurs twice) suggests the encoding problem.
Error returned from iconv
EILSEQ An invalid multibyte sequence has been encountered in the input.
When converting from UTF-8 to UCS-4LE.
If I understand this correctly (character encodings are not my forte),
the script is trying to convert the EPS file from UTF-8 to UCS-4LE (a
new one to me) and is choking on something.
[...]
Conversion script:
--------------------------------------
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os, shutil, sys, locale
def unlinkNoThrow(file):
''' remove a file, do not throw if an error occurs '''
try:
os.unlink(file)
except:
pass
def utf8ToDefaultEncoding(file):
''' if possible, convert to the default encoding '''
try:
language, output_encoding = locale.getdefaultlocale()
if output_encoding == None:
output_encoding = 'latin1'
return unicode(file, 'utf8').encode(output_encoding)
except:
return file
I didn't see where the utf8ToDefaultEncoding function was called in the
conversion script, but maybe I'm just being stupid today. Do you know
what character encoding was used to create figure1.ps? Also, what
locale is set for you machine? I'm not sure what Python's
getdefaultlocale() function looks at; it might be the LANG environment
variable, but that's just a guess.
We may need a developer to help out with this (someone familiar with the
operation of the graphics conversion script).
/Paul
