Mailman 3 February 1998 - Pythonmac-SIG

Graphing capablility in Mac Python
by Anthony M. Ingraldi Aug. 23, 1998

Aug. 23, 1998

Hello, Is there a module available that will provide routines for creating simple line graphs and scatter plots? I was thinking of using AppleEvents to send data to KaleidaGraph or some other package but that seems sluggish. Another alternative would be to use a Canvas widget from Tk. I would prefer to use a module designed specifically for plotting rather than writing one via Tkinter. -- Tony Ingraldi | e-mail: A.M.INGRALDI(a)LaRC.NASA.GOV NASA Langley Research Center | Mail Stop 267 | Phone : (757) 864-3039 Hampton, VA 23681-0001 | Fax : (757) 864-7892 _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] Anyone using Pmw with MacPython?
by Jack Jansen Feb. 25, 1998

Feb. 25, 1998

The one things Greg fails to mention about Pmw is that the widget set lives on top of Tkinter. Therefore it should be portable between Unix/Mac/Windows. -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ if you agree copy these lines to your sig ++++ http://www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] Anyone using Pmw with MacPython?
by Anthony Wilson Feb. 25, 1998

Feb. 25, 1998

hello tmk, >What's Pmw Jack? the following is an excerpt from a posting by the maintainer of Pmw, Greg, to the comp.lang.python list. Hope this helps. ************************* ******** Anthony L. Wilson ******** * * Analog IC Designer * * * Air Force Research Lab, Kirtland AFB, NM, 87109 * * * Ph: 505.846.4499 Fax: 505.846.2290 * * ******* mailto:wilsona@plk.af.mil ******* *************************** ------------------------------------------------------------------------ For more information on Pmw, see the home page at http://www.dscpl.com.au/pmw/ and click on the link to the latest version. You can fetch the entire distribution from ftp://ftp.dscpl.com.au/pub/pmw/Pmw.0.6.2.tar.gz If you have any comments, enhancements or new contributions, please contact me (gregm(a)iname.com). ===================================================================== For those that do not know about Pmw, here is an extract from the documentation. Pmw is a framework for building high-level compound widgets, or megawidgets, constructed using other widgets as component parts. It promotes consistent look and feel within and between graphical applications, is highly configurable to your needs and is easy to use. Pmw consists of: A few base classes, providing a framework for building megawidgets. A library of flexible and extensible megawidgets built on the base classes, such as ButtonBox, ComboBox, MessageDialog, etc. A lazy importer/dynamic loader which is automatically invoked when Pmw is first imported. This gives unified access to all Pmw classes and functions though the "Pmw." prefix. It also speeds up module loading time by only importing Pmw sub-modules when needed. Reference documentation, consisting of complete listings of megawidget options, methods and components. Full descriptions are also available for all the base classes and several other megawidget classes. Descriptions of the other megawidgets will be released soon. A test framework and tests for both the Tkinter module and all the Pmw megawidgets. A slick demonstration of the megawidgets. An interface to the BLT busy, graph and vector commands. The interface to Pmw megawidgets is similar to basic Tk widgets, so it is easy for developers to include both megawidgets and basic Tk widgets in their graphical applications. In addition, all Pmw megawidgets may themselves be extended, using either inheritance or composition. The use of the Pmw framework and megawidgets replaces common widget combinations with higher level abstractions. This simplifies code, making it more readable and maintainable and more easily modifiable. The ability to extend Pmw megawidgets enables developers to create new megawidgets based on previous work. -- Greg McFarlane INMS Telstra Australia (gregm(a)iname.com)

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Anyone using Pmw with MacPython?
by Jack Jansen Feb. 25, 1998

Feb. 25, 1998

Is anyone using Pmw on the Mac? I tried it, and it sort-of works (after a minor bugfix to the PmwLoader.py) file, but various things don't work exactly as expected. If anyone is interested in helping me debug Pmw (or, more likely, the Mac Tcl/Tk port or MacPython) please let me know, -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ if you agree copy these lines to your sig ++++ http://www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] How to print a PostScript file?
by Jack Jansen Feb. 24, 1998

Feb. 24, 1998

> Has anyone here got experience how to do this in, say, C? It would be really > nice if we could print from Python. How hard is it? Printing in general should be fairly easy: you open a special sort of graphport and render in that. When someone tells me which calls are needed (or which interfaces should be bgenned) I should be able to implement that quickly. Postscript printing (i.e. from postscrip source, not through quickdraw calls) is a different story, however, it uses some tricks if I remember correctly but I don't know exactly which ones. So, I'll definitely need a bit of help before I can implement this... -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ if you agree copy these lines to your sig ++++ http://www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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How to print a PostScript file?
by Skip Montanaro Feb. 23, 1998

Feb. 23, 1998

I'm generating PostScript from a small Python application on my Mac (never having programmed anything more than simple spreadsheets on a Mac before). I don't have a PostScript printer so I've been displaying the output in MacGS and printing from there. The application will eventually be delivered to a Mac with a PostScript printer, however. Is there an easy way to print a PostScript file from within Python? It's simple Adobe Level-1 PostScript. Thanks, Skip Montanaro | Musi-Cal: http://concerts.calendar.com/ skip(a)calendar.com | Python Support: http://www.pythonpros.com/ (518)372-5583 | XEmacs: http://www.automatrix.com/~skip/xemacs/tip.html _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] Bomberoo with applet memory set too low...
by Steve Spicklemire Feb. 23, 1998

Feb. 23, 1998

I like option-drag... it's consistent with the interpreter that way (you can option-drag to it as well...) -steve >>>>> "Jack" == Jack Jansen <Jack.Jansen(a)cwi.nl> writes: >> My little Python application does things the Unix way -- >> assume you have infinite virtual memory and suck an entire file >> in with a single read() or readlines() call. This has some >> rather negative consequences on the Mac. The most troublesome >> is that I get an Error 10 bomb dialog if I haven't set the >> applet's min size/preferred size values high enough. Two >> questions: >> >> 1. Shouldn't Python crap out more gracefully in this situation? Jack> Definitely... It isn't always simple, though: if it is Jack> Python who does the malloc that fails it usually gets turned Jack> into a MemoryError exception, but if it's the underlying C Jack> library things usually get messy. I can't seem to reproduce Jack> this bomb, though: do you have example code? >> 2. Can BuildApplet be modified to set defaults for >> min/preferred sizes so users (programmers) don't have to >> remember to pop up the applet's info box and increase those >> values? Jack> I'm not sure I like this. BuildApplet is interface-less at Jack> the moment, and I'd like to keep it that Jack> way. Option-dropping a python source on buildapplet could Jack> cause a dialog to appear, but then people are likely to Jack> forget to option-drop. Jack> What do people think? -- Jack Jansen | ++++ stop the Jack> execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ Jack> if you agree copy these lines to your sig ++++ Jack> http://www.cwi.nl/~jack | see Jack> http://www.xs4all.nl/~tank/spg-l/sigaction.htm Jack> _______________ PYTHONMAC-SIG - SIG on Python for the Apple Jack> Macintosh Jack> send messages to: pythonmac-sig(a)python.org administrivia to: Jack> pythonmac-sig-request(a)python.org _______________ _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] Bomberoo with applet memory set too low...
by Jack Jansen Feb. 23, 1998

Feb. 23, 1998

> > My little Python application does things the Unix way -- assume you have > infinite virtual memory and suck an entire file in with a single read() or > readlines() call. This has some rather negative consequences on the Mac. > The most troublesome is that I get an Error 10 bomb dialog if I haven't set > the applet's min size/preferred size values high enough. Two questions: > > 1. Shouldn't Python crap out more gracefully in this situation? Definitely... It isn't always simple, though: if it is Python who does the malloc that fails it usually gets turned into a MemoryError exception, but if it's the underlying C library things usually get messy. I can't seem to reproduce this bomb, though: do you have example code? > > 2. Can BuildApplet be modified to set defaults for min/preferred sizes > so users (programmers) don't have to remember to pop up the applet's > info box and increase those values? I'm not sure I like this. BuildApplet is interface-less at the moment, and I'd like to keep it that way. Option-dropping a python source on buildapplet could cause a dialog to appear, but then people are likely to forget to option-drop. What do people think? -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ if you agree copy these lines to your sig ++++ http://www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Bomberoo with applet memory set too low...
by Skip Montanaro Feb. 23, 1998

Feb. 23, 1998

My little Python application does things the Unix way -- assume you have infinite virtual memory and suck an entire file in with a single read() or readlines() call. This has some rather negative consequences on the Mac. The most troublesome is that I get an Error 10 bomb dialog if I haven't set the applet's min size/preferred size values high enough. Two questions: 1. Shouldn't Python crap out more gracefully in this situation? 2. Can BuildApplet be modified to set defaults for min/preferred sizes so users (programmers) don't have to remember to pop up the applet's info box and increase those values? FYI, I'm using MacPython 1.5b3. Thanks, Skip Montanaro | Musi-Cal: http://concerts.calendar.com/ skip(a)calendar.com | Python Support: http://www.pythonpros.com/ (518)372-5583 | XEmacs: http://www.automatrix.com/~skip/xemacs/tip.html _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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Re: [PYTHONMAC-SIG] python15b3 development
by Jack Jansen Feb. 23, 1998

Feb. 23, 1998

Recently, "James B. Wilkinson" <jimmy(a)cs.cofc.edu> said: > Two things I had to change in the development folder before I could get > things to work: > > 1) the file xxmodule.c seems to be missing. I downloaded the full source > distribution and found it there. Oops, my fault. I exclude all .c files in the distribution, but I should make an exception for xxmodule.c (and for the .c file in the embedding demo). > 2) When I dod a make in xx.prj, I got the message 'Couldn't find project > file "PythonCore".' This seemed to refer to the item labeled "PythonCore" > listed under "Libraries" in the Files panel of xx.prj, and I certainly > didn't have a project file named PythonCore in the development folder. And this is casued by the new distribution process, which moves PythonCore to the extensions folder under the name PythonCore <version>. Just: do you think there's an easy fix for this, or should I just put a note in the readme file? > > While running Modulator during all this I noticed that, when you point into > a textbox, the cursor switches rapidly back and forth between ibeam and > arrow. Is this something to do with Tk? I've seen this too, but not had the time to look into it. It could be a problem with modulator (I'll check that by trying it on unix), with Tk or with the Python/Sioux and Tk eventloop interacting. I'll put it on the todo list, but it isn't high-priority. -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)cwi.nl | ++++ if you agree copy these lines to your sig ++++ http://www.cwi.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm _______________ PYTHONMAC-SIG - SIG on Python for the Apple Macintosh send messages to: pythonmac-sig(a)python.org administrivia to: pythonmac-sig-request(a)python.org _______________

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