Re: Charting solutions
Re: Charting solutions
- Subject: Re: Charting solutions
- From: Oleg Svirgstin <email@hidden>
- Date: Thu, 03 Apr 2003 00:52:02 +0300
Hi Benoit,
Hi all,
I am sure there must be dozens of them somewhere in the twilight of the net.
The only problem is that they are impossible to find by their names.
XYPlot seems very good, too.
Best regards
Oleg
>
From: Benoit Marchant <email@hidden>
>
Date: Wed, 2 Apr 2003 11:40:13 -0800
>
To: John Anderson <email@hidden>
>
Cc: Drew McCormack <email@hidden>, email@hidden, Alex
>
<email@hidden>, Dave Sopchak <email@hidden>, Oleg Svirgstin
>
<email@hidden>
>
Subject: Re: Charting solutions
>
>
You should have a look at MathArray from Adam Fedor at
>
>
ftp://ftp.gnustep.org/pub/gnustep/contrib/ MathArray .0.70.s.tar.gz
>
>
It's very well designed and have been around from some time.
>
>
Benoit
>
>
On Tuesday, April 1, 2003, at 01:17 PM, John Anderson wrote:
>
>
> On Tuesday, Apr 1, 2003, at 02:28 America/Detroit, Drew McCormack
>
> wrote:
>
>> Yes, I have just thrown together a small test app with XYPlot to see
>
>> what it is about.
>
>> It works very well, and is quite complete. My framework is less user
>
>> friendly at this
>
>> stage.
>
>>
>
>> My framework takes quite a different approach to XYPlot. XYPlot is
>
>> basically procedural plotting
>
>> code in a single cocoa class. This has advantages, such that it is
>
>> very fast, and quite easy to
>
>> understand. In this sense, it probably meets most peoples needs and
>
>> expectations.
>
>
>
> Drew,
>
>
>
> For the type of scientific / numerical applications that I develop,
>
> something like a pie chart is not going be to necessary. This type of
>
> "warm and fuzzy" presentation is a distinctly different goal from the
>
> fundamental graphs of technical data that we need immediately. So, I
>
> think that the search simple 2D chart / graphics toolkit is basically
>
> resolved for now. For basic 2D plotting in Cocoa, I am going to adopt
>
> XYPlot and build on it. I will commit to releasing some more advanced
>
> GUI / palette versions based on it.
>
>
>
> In particular, I am planning to use and build on XYPlot for time-series
>
> analysis in real-time data acquisition. I have yet to look at the
>
> XYPlot code, but I am going to be concerned about the auto-scaling
>
> features with respect to time axi. Until I get some kind of Cocoa
>
> Numerics site up (which will take me a least a few weeks), anyone who
>
> wants a copy of XYPlot can get it by emailing me off-list.
>
>
>
> For those interested in Cocoa Numerics, within the XYPlot project there
>
> is a very well developed class that I think represents something
>
> missing in the current Cocoa Foundation (again, re-authored by Sean
>
> Hill) . It is called NSValueArray, and it let us handle and manipulate
>
> numerical arrays as NSArrays (instead of C pointers). Like, the
>
> Foundation class is also defined in a mutable form:
>
> NSMutableValueArray. Below I have posted NSValueArray.h for the
>
> curious.
>
>
>
> Truly Yours,
>
> John Philip Anderson
>
> "South of Eight Mile," Michigan
>
> USA
>
>
>
> // Rewritten for OpenStep, 1996 Sean Hill
>
> // Originally by Scott Hess
>
>
>
> #import <Foundation/Foundation.h>
>
>
>
> @interface NSValueArray : NSArray
>
> + valueArray:(const void *)values count:(unsigned)count
>
> withObjCType:(const char *)type;
>
> - initWithValues:(const void *)values count:(unsigned)count
>
> withObjCType:(const char *)type;
>
> -(void)getValue:(void *)value atIndex:(unsigned)index;
>
> - (NSValueArray *)valueArrayFromRange:(NSRange)range;
>
> -(const char *)objCType;
>
> -(unsigned)valueSize;
>
> -(const void *)bytes;
>
> - mutableCopyFromZone:(NSZone *)zone;
>
> - copyFromZone:(NSZone *)zone;
>
>
>
> @end
>
>
>
> @interface NSMutableValueArray : NSMutableArray
>
> + valueArray:(const void *)values count:(unsigned)count
>
> withObjCType:(const char *)type;
>
> + valueArrayWithObjCType:(const char *)type;
>
> - initWithValues:(const void *)values count:(unsigned)count
>
> withObjCType:(const char *)type;
>
> -(void)getValue:(void *)value atIndex:(unsigned)index;
>
> -(NSMutableValueArray *)valueArrayFromRange:(NSRange)range;
>
> -(const char *)objCType;
>
> -(unsigned)valueSize;
>
> -(const void *)bytes;
>
> -(void *)mutableBytes;
>
> -(void)addValue:(void *)value;
>
> -(void)addValues:(void *)values count:(unsigned)count;
>
> -(void)replaceValue:(void *)value atIndex:(unsigned)index;
>
> -(void)insertValue:(void *)value atIndex:(unsigned)index;
>
> -(void)removeValueAtIndex:(unsigned)index;
>
> - mutableCopyFromZone:(NSZone *)zone;
>
> - copyFromZone:(NSZone *)zone;
>
>
>
> @end
>
>
>
> @interface NSNumber (NSValueArrayNumberExtensions)
>
> + (NSValue *)value:(const void *)value withObjCType:(const char
>
> *)type;
>
> @end
>
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>
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