Re: pngtopnm missing?

[Phil Holmes]

I'm sorry I still can't answer your exact question, but I can give some pointers.  pngtopnm is a standard image file format converter on unix boxes, and so I guess Lily assumes it's there for some of its operations, and it isn't on Windows.  Hence the error message. 

 

In my experiments, using --png with -dresolution=nnn gives exactly the same output as -dresolution=nnn/3 -danti-alias-factor=3 - so it appears not worth using the anti alias factor at all.  Accepting that you will never get an image file as good looking as PDF, since PDF scales, then something like lilypond --png -dresolution=900 should give you a better image than you need.

Phil Holmes

 

 

----- Original Message -----

From: Chris Crossen

To: 'Phil Holmes' ; address@hidden

Sent: Wednesday, May 09, 2012 9:54 PM

Subject: RE: pngtopnm missing?

That’s what I tried first. It works, but the .PNG files don’t look anywhere near as good as the PDFs. I was trying to get a good-looking .PNG file with the –danti-alias-factor=2 parameter.

 

From: Phil Holmes [mailto:address@hidden
Sent: Wednesday, May 09, 2012 0:46
To: Chris Crossen; address@hidden
Subject: Re: pngtopnm missing?

 

I don't know why this happens, but you can cure it simply by replacing all the other options you're using with -fpng:

 

lilypond -fpng test.ly

--
Phil Holmes

 

 

----- Original Message -----

From: Chris Crossen

To: address@hidden

Sent: Tuesday, May 08, 2012 4:30 AM

Subject: pngtopnm missing?

 

I am trying to create a .png file from a LilyPond score. I am running Windows XP. I’m getting an error about pngtopnm.

 

Is it part of LilyPond?  Should I have it as part of the install?

 

Below is my run output.

 

Thank you,

Chris Crossen

 

C:\ScoreWork\data>lilypond -dbackend=eps -dno-gs-load-fonts -dinclude-eps-fonts -dresolution=96 -danti-alias-factor=2 --png test.ly

GNU LilyPond 2.14.2

Processing `test.ly'

Parsing...

Interpreting music... [8]

Preprocessing graphical objects...

Finding the ideal number of pages...

Fitting music on 1 page...

Drawing systems...

Layout output to `test.eps'...

Converting to PNG...'pngtopnm' is not recognized as an internal or external command,

operable program or batch file.

GS exited with status: 255  

---

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