Re: TCanvas creates PDFs with extra blank page ?

From: Chris Jones <jonesc_at_hep.phy.cam.ac.uk>
Date: Mon, 6 Sep 2010 15:51:59 +0100

Hi,

OK thanks. I cannot use a DEV version of ROOT though, so will have to wait until this comes into production ...

cheers Chris

Olivier Couet wrote:

>> One thing. To properly create a PDF you have to do
>> c.Print("test.pdf[","pdf")

>
> This was fixed on May 26th this year. I am using 5.27 on linux
>
> -----Original Message-----
> From: Chris Jones [mailto:jonesc_at_hep.phy.cam.ac.uk]
> Sent: Monday, September 06, 2010 2:27 PM
> To: Olivier Couet
> Cc: roottalk_at_root.cern.ch
> Subject: Re: [ROOT] TCanvas creates PDFs with extra blank page ?
>
> Hi,
>
> One thing. To properly create a PDF you have to do
>
> c.Print("test.pdf[","pdf")
>
> If you just do
>
> c.Print("test.pdf[")
>
> Then there is another bug (which I reported before but seems never got
> fixed) in that ROOT actually creates a PS file. If you then load this
> "PDF" file with say gv, then it might seem to have worked OK, but that
> is only because you don't actually have a PDF file, but a PS one...
>
> cheers Chris
>
> Chris Jones wrote:

>> Hi,
>>
>> It is nothing to do with PyRoot, I think, as the follow test CINT 
>> script shows the same bug for me. Switch to PS from PDF for the file 
>> type, and the empty page disappears.
>>
>> cheers Chris
>>
>> {
>>
>>   std::string fileType = "pdf";
>>
>>   TCanvas * c = new TCanvas();
>>
>>   c->Print( ("test."+fileType+"[").c_str(), fileType.c_str() );
>>
>>   TH1F * h = new TH1F("test","test",100,0.0,1.0);
>>
>>   h->Draw();
>>   c->Update();
>>   c->Print( ("test."+fileType).c_str(), fileType.c_str() );
>>
>>   c->Print( ("test."+fileType+"]").c_str(), fileType.c_str() );
>>
>> }
>>
>>
>> Chris Jones wrote:
>>> Hi,
>>>
>>> OK, I'll try with CINT.
>>>
>>> Could you also try with PyRoot ?
>>>
>>> Exactly which root version did you use yourself, and what platform ?
>>>
>>> cheers Chris
>>>
>>> Olivier Couet wrote:
>>>> Hi,
>>>> I just tried with the last ROOT version on my Linux machine and it 
>>>> is fine for me.
>>>> (with CINT of course :-) ).
>>>> Cheers,
>>>> O.Couet
>>>>
>>>> -----Original Message-----
>>>> From: Chris Jones [mailto:jonesc_at_hep.phy.cam.ac.uk] Sent: Monday, 
>>>> September 06, 2010 1:07 PM
>>>> To: Olivier Couet
>>>> Cc: roottalk_at_root.cern.ch
>>>> Subject: Re: [ROOT] TCanvas creates PDFs with extra blank page ?
>>>>
>>>> Hi,
>>>>
>>>>> Do you get the same with the CINT macro ?
>>>> No idea. I try and stay away from CINT as much as possible... I 
>>>> could try if you insist ;)
>>>>
>>>>> Which root version are you using ?
>>>> Sorry, should have said. A very recent version - 
>>>> 5.26.00cp1_python2.5 from /afs/cern.ch/sw/lcg/app/releases/ROOT
>>>>
>>>>> On which platform ?
>>>> SLC5.
>>>>
>>>> cheers Chris
>>>>
>>>>> Cheers,
>>>>> O. Couet
>>>>>
>>>>> -----Original Message-----
>>>>> From: owner-roottalk_at_root.cern.ch 
>>>>> [mailto:owner-roottalk_at_root.cern.ch]
>>>>> On Behalf Of Chris Jones
>>>>> Sent: Monday, September 06, 2010 12:43 PM
>>>>> To: roottalk_at_root.cern.ch
>>>>> Subject: [ROOT] TCanvas creates PDFs with extra blank page ?
>>>>>
>>>>> Hi,
>>>>>
>>>>> I use the TCanvas.Print method with the "[" and "]" syntax to full 
>>>>> multipage PDF and PS files from a PyRoot script. i.e.
>>>>>
>>>>> canvas = TCanvas()
>>>>>
>>>>> # Open the file
>>>>> canvas.Print("File.pdf[")
>>>>>
>>>>> # print some pages (after plotting histograms etc.)
>>>>> canvas.Print("File.pdf")
>>>>>
>>>>> # Close the file
>>>>> canvas.Print("File.pdf]")
>>>>>
>>>>> I've noticed that if I create a PDF, my preferred format, I always 
>>>>> seem to get an unwanted extra blank page at the start of the

> document.

>>>>> If, on the other hand I create PS files instead, I don't. See as 
>>>>> examples
>>>>>
>>>>> <http://www.hep.phy.cam.ac.uk/~jonesc/HPDImageCalibrationByFill.ps>
>>>>> <http://www.hep.phy.cam.ac.uk/~jonesc/HPDImageCalibrationByFill.pdf
>>>>> Any ideas why ?
>>>>>
>>>>> cheers Chris
>>>>>

>
Received on Mon Sep 06 2010 - 16:52:05 CEST