| Re: Relative strengths: IDL vs. PV-Wave ? [message #7608] |
Tue, 03 December 1996 00:00  |
Martin Szummer
Messages: 2
Registered: December 1996
|
Junior Member |
|
|
Dear All,
I did some searches using DejaNews and found previous
comments regarding the merits of IDL and PV-Wave.
I have taken the liberty to abbreviate the replies;
the context may be missing, my apologies.
Use DejaNews to retrieve the original posts. The query string was:
IDL & PV-Wave & (compar* | differen* | better | best | review*)
Also I do not know how up to date the information is with respect
to the latest versions, but I have included post dates.
If you think these facts and opinions are mistaken, please add yours!
--- Martin
------------------------------------------------------------ -------
grunes@news.nrl.navy.mil (Mitchell R Grunes)
sci.image.processing, comp.lang.apl posted 1996/09/24, 1996/08/15
IDL vs PV-Wave
IDL handles more image file formats
IDL handles 24 bit display, PV-Wave could not, at least in the past
PV-Wave has smooth animation on SGI's, but IDL flickers
IDL has better memory use
IDL has better world maps
IDL has possibly better documentation
------------------------------------------------------------ ------
Comparison IDL and Matlab
Source: http://www.amara.com/ftpstuff/IDL_Matlab.txt
IDL vs Matlab
Matlab
+ more compact syntax
- no explicit types
+ more beautiful graphics
- non-intuitive to customize graphics
+ more built-in functions than IDL
+ more toolkits
- difficult to batch-process a directory of files
+ better technical support than IDL
IDL
+ more of a true programming language: procedures, functions, explicit
types
+ more file formats supported (HDF, CDF, easier to write new ones)
+ file I/O easier
------------------------------------------------------------ ---------
William Clodius <wclodius@lanl.gov>
Date: 1996/09/23
Newsgroups: sci.image.processing
...
Both packages provide accesss to extensive numerial libraries, PV-Wave
to those of IMSL (this may be an optional add-on), IDL to an enxtensive
subset of Numerical Recipes Routines. No knowledgeable person would
argue that the Numerical Recipes routines are better than those of IMSL,
but the wide availability of the Numerical Recipes text may make
cutomization of those routines easier in IDL.
------------------------------------------------------------ -----------
Newsgroups: sci.image.processing
From: medimtintl@aol.com (MedImTIntl)
Date: 1996/09/21
(...) Any "additional library" from the VNI is
many times outweighed by the contributions in the User Library developed
by hundreds of users around the world that continuously contribute and
enrich the RSI offerings.
------------------------------------------------------------ ----------
comp.lang.idl-pvwave
Subject: Re: Can I do this without using loops?
From: David Ritscher <david.ritscher@zibmt.uni-ulm.de>
Date: 1996/06/14
Message-Id: <31C17DE4.50C@zibmt.uni-ulm.de>
IDL. Version 3.1.0 and PV-WAVE v6.01. Sometimes one was faster,
sometimes the other (often by a factor of two or more!).
Insert columns Insert rows
IDL PV-Wave IDL PV-Wave
1. 22.84 17.58 30.48 21.31
2. 22.77 30.81 4.45 1.48
3. 3.88 9.73 3.87 9.70
4. 12.05 11.93 5.67 7.17
5. 89.24 164.56 87.51 163.15
6. 141.93 385.72 140.45 389.53
7. 92.75 166.44 92.82 169.71
8. 1.30 4.96 9.78 10.29
9. 30.75 28.71 18.40 21.60
Tested using the following number of rows and columns: 1000, 30000
Insert columns Insert rows
IDL PV-Wave IDL PV-Wave
1. 84.95 71.09 Inf Inf
2. Inf Inf 28.52 22.69
3. 27.65 42.95 30.88 50.10
4. 129.53 138.84 124.39 126.26
5. 300.62 547.51 296.74 556.55
6. - 1284.83 - 1300.17
7. Inf Inf Inf Inf
8. 20.07 28.76 Inf Inf
9. - 3100.02 158.07 161.23
------------------------------------------------------------ --------
Newsgroups: comp.lang.idl-Pvwave
Date: 1996/06/15
Subject: Re: Can I do this without using loops?
From: David Ritscher <david.ritscher@zibmt.uni-ulm.de>
...
Ratios of execution times of rebin(/sample) / rebin():
problem with 3000, 3000 rows and columns:
IDL PV-Wave
test8 1.22997 0.676364
test8_rows 0.999363 0.956496
problem with 1000, 30000 rows and columns:
IDL PV-Wave
test8 1.06719 0.936516
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
