Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-23 Thread Ray Tayek 

At 04:48 AM 1/23/2011, you wrote:

Ray Tayek  writes:

> i agree. this looks like ghostscript is what i should be fooling
> around with.

You need antialiasing. Use explicit settings on the command line,
e.g.,

  -dTextAlphaBits=4 -dGraphicsAlphaBits=4

Why not use the tool I sent you?

-- Johan


i tried. i am on windows. don't know perl.

i tried strawberry perl and pointing to my gswin32.exe, i get a 
window from my $gs = `D:/bin/gs/gs9.00/bin/gswin32.exe --help`;


trying cygwin with gs, gets some test failures (please see attached file)

thanks



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Script started on Sun Jan 23 15:42:31 2011
.bashrc
]0;/cygdrive/d/dev/eps2png-2.7

ray@p5gc-mx /cygdrive/d/dev/eps2png-2.7

$ make test
PERL_DL_NONLAZY=1 /usr/bin/perl.exe "-MExtUtils::Command::MM" "-e" 
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/eps2gif.t .. 
t/eps2gif.t .. 1/5 sh: ppmtogif: command not found
Problem creating t/x1.out for t/x1.eps
# Looks like you planned 5 tests but ran 1.
# Looks like your test exited with 1 just after 1.


t/eps2gif.t .. Dubious, test returned 1 (wstat 256, 0x100)
Failed 4/5 subtests 
t/eps2jpg.t .. 
t/eps2jpg.t .. 1/5 

t/eps2jpg.t .. ok
t/eps2png.t .. 
t/eps2png.t .. 1/5 

t/eps2png.t .. ok
t/extra.t  
t/extra.t  1/20 
  
t/extra.t  ok

Test Summary Report
---
t/eps2gif.t (Wstat: 256 Tests: 1 Failed: 0)
  Non-zero exit status: 1
  Parse errors: Bad plan.  You planned 5 tests but ran 1.
Files=4, Tests=31,  2 wallclock secs ( 0.05 usr  0.01 sys +  1.22 cusr  0.78 
csys =  2.06 CPU)
Result: FAIL
Failed 1/4 test programs. 0/31 subtests failed.
make: *** [test_dynamic] Error 255
]0;/cygdrive/d/dev/eps2png-2.7

ray@p5gc-mx /cygdrive/d/dev/eps2png-2.7

$ exit

Script done on Sun Jan 23 15:42:42 2011
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-23 Thread Johan Vromans 
Ray Tayek  writes:

> i agree. this looks like ghostscript is what i should be fooling
> around with.

You need antialiasing. Use explicit settings on the command line,
e.g., 

  -dTextAlphaBits=4 -dGraphicsAlphaBits=4

Why not use the tool I sent you?

-- Johan
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-22 Thread Ray Tayek 
At 02:47 AM 1/22/2011, you wrote:

>On 01/22/2011 10:38 AM, Ray Tayek wrote:
> > At 02:03 AM 1/21/2011, you wrote:
>...
> >> I used a plain: "convert page3b.eps page3b.gif" (no parameters whatsoever)
> > displaying this in my email reader (eudora), it looks great. in a
> > browser it looks great.
> >
> > viewing with picasa shows a black background, gimp shows a checkerboard.
>
>
>Very likely because by default it is a transparent GIF (btw, IMHO PNG is
>much better than GIF).

i picked png because they looked the same to me (i have poor vision) 
and the gif was smaller.

>(side note: at that point GIMP is no longer involved, so I'm wondering
>if this can can continue on the Gimp-user list).

i agree. this looks like ghostscript is what i should be fooling around with.

i looked for gs mailing lists, but just found these: 
http://ghostscript.com/mailman/listinfo/ - it doesn't look like the 
is a mailing list for users :)

thanks to all for your help.

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-22 Thread Ray Tayek 
At 02:41 AM 1/22/2011, Mike Williams wrote:
>On Fri, Jan 21, 2011 at 11:28 AM, Ofnuts 
><ofn...@laposte.net> wrote:
>
>< %%BoundingBox: -1 -1 234 234
>---
> > %%BoundingBox: 0 0 500 500
>17c17
>< 0.47166 0.47166 scale
>---
> > 1 1 scale
>
>
>I played with this a bit with ghostscript after gettting the changes 
>for page3b.eps
>
>It turned out that my problem was the command line parameters for 
>ghostscript were overriding what was in the eps file.  After I got 
>that sorted out I noticed that the horizontal lines of the outer 
>border were thinner that the vertical lines.  I think was due to 
>using a single number for -r and not having square pixels.
>
>http://watson.bio.whe.umb.edu/images/page3b12.png

this looks great!

>One more change to the command line args fixed that problem, at 
>least on my screen.
>
>gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pngmono -r91.8456X97.5238 
>-dDEVICEWIDTHPOINTS=500 -dDEVICEHEIGHTPOINTS=500  -sOutputFile=$2.png $1.eps
>
>http://watson.bio.whe.umb.edu/images/page3b13.png

it's hard to see any difference in the two (i have poor vision).

i have ghostscript (for windoze). the viewer does a good job also.

i want to do some experiments with gs. can you please send me some of 
your scripts. (i can use cygwin or groovy to do scripting).

thanks

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-22 Thread Ofnuts 

On 01/22/2011 10:38 AM, Ray Tayek wrote:
> At 02:03 AM 1/21/2011, you wrote:
>
>> On 01/21/2011 09:13 AM, Ray Tayek wrote:
>>> what should the values be for bounding box?
>> current bounding box size/current scaling factor=235/.47166=498,24 (I
>> used 500)
> i understand that.
>
> what about a bounding box like: %%BoundingBox: -1 -21 101 214
>
> would this need some kind of translate or something?
>
 can you show me the values that you used and the convert command that
>>> had the great result?
>> Already sent you the fixed EPS (page3b.eps)
> yes. i got that from my mail folder.
>
>> I used a plain: "convert page3b.eps page3b.gif" (no parameters whatsoever)
> displaying this in my email reader (eudora), it looks great. in a
> browser it looks great.
>
> viewing with picasa shows a black background, gimp shows a checkerboard.


Very likely because by default it is a transparent GIF (btw, IMHO PNG is 
much better than GIF). Convert must have an option to set a background. 
But if you use the images in a web site, you can leave them that way, 
and have the HTML display them over a go-ban picture (or any wooden 
pattern).

(side note: at that point GIMP is no longer involved, so I'm wondering 
if this can can continue on the Gimp-user list).


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-22 Thread Mike Williams 
On Fri, Jan 21, 2011 at 11:28 AM, Ofnuts  wrote:

>  On 01/21/2011 04:30 PM, Mike Williams wrote:
>
>
>>  Would someone please post the differences between page3.eps and
> page3b.eps?
>
> diff page3.eps page3b.eps
>
> 2c2
>
> < %%BoundingBox: -1 -1 234 234
> ---
> > %%BoundingBox: 0 0 500 500
> 17c17
> < 0.47166 0.47166 scale
> ---
> > 1 1 scale
>

I played with this a bit with ghostscript after gettting the changes for
page3b.eps

It turned out that my problem was the command line parameters for
ghostscript were overriding what was in the eps file.  After I got that
sorted out I noticed that the horizontal lines of the outer border were
thinner that the vertical lines.  I think was due to using a single number
for -r and not having square pixels.

http://watson.bio.whe.umb.edu/images/page3b12.png

One more change to the command line args fixed that problem, at least on my
screen.

gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pngmono -r91.8456X97.5238
-dDEVICEWIDTHPOINTS=500 -dDEVICEHEIGHTPOINTS=500  -sOutputFile=$2.png $1.eps

http://watson.bio.whe.umb.edu/images/page3b13.png

Mike
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-22 Thread Ray Tayek 
At 02:03 AM 1/21/2011, you wrote:

>On 01/21/2011 09:13 AM, Ray Tayek wrote:
> >
> > what should the values be for bounding box?
>
>current bounding box size/current scaling factor=235/.47166=498,24 (I
>used 500)

i understand that.

what about a bounding box like: %%BoundingBox: -1 -21 101 214

would this need some kind of translate or something?

> >> can you show me the values that you used and the convert command that
> > had the great result?
>
>Already sent you the fixed EPS (page3b.eps)

yes. i got that from my mail folder.

>I used a plain: "convert page3b.eps page3b.gif" (no parameters whatsoever)

displaying this in my email reader (eudora), it looks great. in a 
browser it looks great.

viewing with picasa shows a black background, gimp shows a checkerboard.

i put some examples of this here: http://tayek.com/bobt/images/ofnuts/

thanks


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-21 Thread Ofnuts 

On 01/21/2011 04:30 PM, Mike Williams wrote:



Would someone please post the differences between page3.eps and 
page3b.eps?


I tried changing scale to 1.0 1.0 and get an image with a thicker 
outer border, but the image is clipped, only the lower left corner of 
the figure is shown and the images is about 300x300 - tried changing 
the bounding box.  That did not help.




diff page3.eps page3b.eps
2c2
< %%BoundingBox: -1 -1 234 234
---
> %%BoundingBox: 0 0 500 500
17c17
< 0.47166 0.47166 scale
---
> 1 1 scale

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-21 Thread Mike Williams 
On Fri, Jan 21, 2011 at 5:03 AM, Ofnuts  wrote:

>
> On 01/21/2011 09:13 AM, Ray Tayek wrote:
> >
> > At 03:26 PM 1/20/2011, Ofnuts wrote:
> >> ...
> >>  If you edit the EPS to work with a
> >> 1:1 scale and a sufficient bounding box (2 lines to edit, no hard to
> >> script), the output of convert is OK.
> >
> > what should the values be for bounding box?
>
> current bounding box size/current scaling factor=235/.47166=498,24 (I
> used 500)
>
> >
> > can you show me the values that you used and the convert command that
> > had the great result?
>
> Already sent you the fixed EPS (page3b.eps)
>
> Would someone please post the differences between page3.eps and page3b.eps?

I tried changing scale to 1.0 1.0 and get an image with a thicker outer
border, but the image is clipped, only the lower left corner of the figure
is shown and the images is about 300x300 - tried changing the bounding box.
That did not help.

Mike
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-21 Thread Ofnuts 

On 01/21/2011 09:13 AM, Ray Tayek wrote:
>
> At 03:26 PM 1/20/2011, Ofnuts wrote:
>> ...
>>   All of them produce an image with less pixels than the conversion in
>> Gimp... (235x235 instead of 326x326).
>>
>> If you look at the EPS it specifies a 235x235 bounding box, and a scale
>> factor to shoehorn the diagram in it.
>
> the page.eps file that i am using has: %%BoundingBox: -1 -1 234 234 
> and identify says both the eps and convert gif are 235 by 235. gimp 
> says the eps is 236 by 236 when i import it.
>
>>  If you edit the EPS to work with a
>> 1:1 scale and a sufficient bounding box (2 lines to edit, no hard to
>> script), the output of convert is OK.
>
> what should the values be for bounding box?

current bounding box size/current scaling factor=235/.47166=498,24 (I 
used 500)

>
> can you show me the values that you used and the convert command that 
> had the great result?

Already sent you the fixed EPS (page3b.eps)

I used a plain: "convert page3b.eps page3b.gif" (no parameters whatsoever)



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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-21 Thread Ray Tayek 
At 03:26 PM 1/20/2011, Ofnuts wrote:
>...
>   All of them produce an image with less pixels than the conversion in
>Gimp... (235x235 instead of 326x326).
>
>If you look at the EPS it specifies a 235x235 bounding box, and a scale
>factor to shoehorn the diagram in it.

the page.eps file that i am using has: %%BoundingBox: -1 -1 234 234 
and identify says both the eps and convert gif are 235 by 235. gimp 
says the eps is 236 by 236 when i import it.

>  If you edit the EPS to work with a
>1:1 scale and a sufficient bounding box (2 lines to edit, no hard to
>script), the output of convert is OK.

what should the values be for bounding box?

can you show me the values that you used and the convert command that 
had the great result?

thanks

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Kevin Cozens 
Ray Tayek wrote:
> i put one here: http://tayek.com/bobt/images/page3.eps

I looked at the contents of the source file. Ignoring the scaling factor in 
the image, all lines are 0.8 points with the exception of the outside border 
which has a width of 1.92 points.

You can see the thicker border when the image is viewed with the ghostscript 
viewer program, gv. If the conversion from eps to something else doesn't 
produce an image with slightly thicker outside borders than the rest of the 
horizontal and vertical lines, you aren't getting a true view of the image.

Any discrepancy could be due to a number of factor. Bugs in the code, for a 
start, or the size of the output image may be insufficient to allow you to 
see the different line widths.

What might also be affecting image quality when using convert are options 
such as anti-aliasing. I just generated a 400x400 pixel image and the 
quality of the lines was not what I was expecting. Possibly a case of a 
program trying to be too helpful.

> http://tayek.com/bobt/images/gimp/dbp.html

Hm... I'm starting to think these images have something to do with learning 
strategy for Go.

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 08:44 PM 1/20/2011, you wrote:
>Ray Tayek wrote:
> > yes, i tried a bunch of them at http://tayek.com/bobt/images/gif.html
> > but none of them are very good
>
>There is a problem with the set of sample conversions. The image produced by
>GIMP which is supposedly the "good" version of the image is larger than the
>other samples you show. If you can provide a link to the original eps file
>it would be possible to verify the expected look of the image using 
>ghostscript.

i put one here: http://tayek.com/bobt/images/page3.eps

>I have a strong suspicion that the "good" image you obtained using GIMP may
>not be an accurate representation of the original source file. ..

yes. someone else has also pointed this out.

i did use daves batch thing for gimp on a bunch of eps files and got 
some fair results. you can see them here: 
http://tayek.com/bobt/images/gimp/dbp.html

thanks


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Kevin Cozens 
Ray Tayek wrote:
> yes, i tried a bunch of them at http://tayek.com/bobt/images/gif.html 
> but none of them are very good

There is a problem with the set of sample conversions. The image produced by 
GIMP which is supposedly the "good" version of the image is larger than the 
other samples you show. If you can provide a link to the original eps file 
it would be possible to verify the expected look of the image using ghostscript.

I have a strong suspicion that the "good" image you obtained using GIMP may 
not be an accurate representation of the original source file. If GIMP is 
producing the wrong output that is another matter that can only be checked 
and/or fixed with the original eps file.
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ofnuts 

On 01/20/2011 11:40 PM, Ray Tayek wrote:
>
> At 03:06 AM 1/20/2011, you wrote:
>
>> On 01/20/2011 02:24 AM, Ray Tayek wrote:
>> > hi, i have a lot of eps files that i need to convert to gif (or png).
>> > i was trying to use image magic, but not having any luck. ...
>>
>> Not with Gimp... this is the kind of work ImageMagick's convert is meant
>> for. Might be as simple as:
>>
>> convert image.eps image.gif
>>
>> but you also have a very large set of options...
>
> yes, i tried a bunch of them at http://tayek.com/bobt/images/gif.html 
> but none of them are very good
>
  All of them produce an image with less pixels than the conversion in 
Gimp... (235x235 instead of 326x326).

If you look at the EPS it specifies a 235x235 bounding box, and a scale 
factor to shoehorn the diagram in it. If you edit the EPS to work with a 
1:1 scale and a sufficient bounding box (2 lines to edit, no hard to 
script), the output of convert is OK. You can likely ask convert to 
scale down the graphic at that point and get correct results, scaling is 
always best done as the last thing in the process.

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 10:58 AM 1/20/2011, Chris Mohler wrote:
>On Wed, Jan 19, 2011 at 10:57 PM, Ray Tayek  wrote:
> > oh, it's python (didn't know that gimp ate python).
> >
> > i will try some python. don't see any python-fu under filters though.
> >
> > are the conversion options documented anywhere?
>
>Are you on Windows?  You'll need to install python support for GIMP if so:
>http://gimp-win.sourceforge.net/faq.html

yes, i am on windows, thanks for the link.

>Most procedures can be found in the Procedure Browser - type 'eps' in
>the search field.
>
>Also - I second the recommendation of David's Batch Processor, if you
>cannot get imagemagick to do the trick.  That was the script whose
>name escaped me ;)

i will look at that also.

thanks

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 11:29 PM 1/19/2011, you wrote:
>What are your problems with Imagemagick, which is exactly the tool you
>need?

i go some ideas from the image magic list and i tried a bunch of 
combinations of their suggestions. you can see what i tried at 
http://tayek.com/bobt/images/gif.html.

what happens is that the lines vary in thickness (or get eliminated) 
or they end up gray. i don't know how to tell image magick that this 
is a line drawing.

if i convert manually with gimp, i get a fair result.

thanks


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 03:06 AM 1/20/2011, you wrote:

>On 01/20/2011 02:24 AM, Ray Tayek wrote:
> > hi, i have a lot of eps files that i need to convert to gif (or png).
> > i was trying to use image magic, but not having any luck. ...
>
>Not with Gimp... this is the kind of work ImageMagick's convert is meant
>for. Might be as simple as:
>
>convert image.eps image.gif
>
>but you also have a very large set of options...

yes, i tried a bunch of them at http://tayek.com/bobt/images/gif.html 
but none of them are very good



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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 11:30 PM 1/19/2011, you wrote:
>On 1/20/2011 2:24 AM, Ray Tayek wrote:
> > hi, i have a lot of eps files that i need to convert ...
>Try David's Batch Processor:
>http://members.ozemail.com.au/~hodsond/dbp.html
>
>It's really cool.

i will try this.

thanks


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 

At 12:46 AM 1/20/2011, you wrote:

Ray Tayek  writes:

> http://tayek.com/bobt/images/gif.html

Can you send me the eps, please?


sure, attached please find. page3 is one i did the testing on.

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page3.eps
Description: PostScript document
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 07:05 PM 1/19/2011, you wrote:
>On Wed, Jan 19, 2011 at 7:24 PM, Ray Tayek  wrote:
> > hi, i have a lot of eps files that i need to convert to gif (or png) ...
> > i am a programmer, but i do not know lisp.
>
>This was one of the first hits I got for 'batch' and 'convert' at the
>plugin registry:
>http://registry.gimp.org/node/5511

oh, it's python (didn't know that gimp ate python).

i will try some python. don't see any python-fu under filters though.

are the conversion options documented anywhere?

thanks

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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 11:07 PM 1/19/2011, you wrote:
>Ray Tayek  writes:
>
> > if i import an eps into gimp and save it as a gif, it look pretty
> > good. but i need to convert hundreds of these.
> >
> > can someone point me to some kind of starter script that would go
> > throug the eps files in a directory and do the conversion.
>
>ImageMagick's convert tool would be a good choice.

i've been trying that. i tried all combinations of some of the these:

def csg="-colorspace gray"
def c2="-colors 2"
def bw="-background white"
def d1="-depth 1"
def fl="-flatten"
def ao="-alpha off"

you can see the results here.

http://tayek.com/bobt/images/gif.html

none of them look as good as the gimp output.

thanks


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ray Tayek 
At 03:06 AM 1/20/2011, you wrote:

>On 01/20/2011 02:24 AM, Ray Tayek wrote:
> > hi, i have a lot of eps files that i need to convert to gif (or png).
> > i was trying to use image magic, but not having any luck. ...
>
>Not with Gimp... this is the kind of work ImageMagick's convert is meant
>for. Might be as simple as:
>
>convert image.eps image.gif
>
>but you also have a very large set of options...

yes, i tried a bunch of them at http://tayek.com/bobt/images/gif.html 
but none of them are very good



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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Chris Mohler 
On Wed, Jan 19, 2011 at 10:57 PM, Ray Tayek  wrote:
> oh, it's python (didn't know that gimp ate python).
>
> i will try some python. don't see any python-fu under filters though.
>
> are the conversion options documented anywhere?

Are you on Windows?  You'll need to install python support for GIMP if so:
http://gimp-win.sourceforge.net/faq.html

Most procedures can be found in the Procedure Browser - type 'eps' in
the search field.

Also - I second the recommendation of David's Batch Processor, if you
cannot get imagemagick to do the trick.  That was the script whose
name escaped me ;)

Chris
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Kevin Cozens 
Ray Tayek wrote:
> hi, i have a lot of eps files that i need to convert to gif (or png). 
> i was trying to use image magic, but not having any luck.

Install ImageMagick on your computer then you can use its "convert" program 
in a script to convert your images to the format you need.
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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-20 Thread Ofnuts 

On 01/20/2011 02:24 AM, Ray Tayek wrote:
> hi, i have a lot of eps files that i need to convert to gif (or png).
> i was trying to use image magic, but not having any luck.
>
> i am a programmer, but i do not know lisp.
>
> if i import an eps into gimp and save it as a gif, it look pretty
> good. but i need to convert hundreds of these.
>
> can someone point me to some kind of starter script that would go
> throug the eps files in a directory and do the conversion.
>
> any pointers will be appreciated.
>
> thanks
>
>

Not with Gimp... this is the kind of work ImageMagick's convert is meant 
for. Might be as simple as:

convert image.eps image.gif

but you also have a very large set of options...


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Re: [Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-19 Thread Tőkés Ábel 
On 1/20/2011 2:24 AM, Ray Tayek wrote:
> hi, i have a lot of eps files that i need to convert to gif (or png).
> i was trying to use image magic, but not having any luck.
>
> i am a programmer, but i do not know lisp.
>
> if i import an eps into gimp and save it as a gif, it look pretty
> good. but i need to convert hundreds of these.
>
> can someone point me to some kind of starter script that would go
> throug the eps files in a directory and do the conversion.
>
> any pointers will be appreciated.
>
> thanks
>
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>
>

Try David's Batch Processor:
http://members.ozemail.com.au/~hodsond/dbp.html

It's really cool.

Abel
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[Gimp-user] newbie: script for comverting eps line drawings to gif

2011-01-19 Thread Ray Tayek 
hi, i have a lot of eps files that i need to convert to gif (or png). 
i was trying to use image magic, but not having any luck.

i am a programmer, but i do not know lisp.

if i import an eps into gimp and save it as a gif, it look pretty 
good. but i need to convert hundreds of these.

can someone point me to some kind of starter script that would go 
throug the eps files in a directory and do the conversion.

any pointers will be appreciated.

thanks

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