Re: basic questions
- To: mathgroup at smc.vnet.net
- Subject: [mg87359] Re: basic questions
- From: dh <dh at metrohm.ch>
- Date: Tue, 8 Apr 2008 07:16:16 -0400 (EDT)
- References: <ftfeeq$bqp$1@smc.vnet.net>
Hi Markus,
see below.
Daniel
markus.mooslechner at chello.at wrote:
> hi everyone!
>
> first of all i would like to introduce myself to the list: i work as artist and would describe myself as mathematica noob. being an artist i am mainly engaged in visualizing chaotic systems, such as iterated function systems or time series from experimental data. now, here comes the mathematica bit for which i hope to find some information on this list (at the moment i do not own mathematica but have the chance to use it on one of the machines at the local university (mathematica 6)).
>
> i would be very happy to find some tips for those basic noob questions:
>
> - how can i import a 3 column (x,y,z) file into mathematica an do a 3d plot? ps: i managed the 2d version with something like data=Import["file", List] and ListPlot ... or so ...
Imoprting 3D works the same as 2D.
To plot colored points you may e.g. define a function that takes a point
and returns a color and a point, e.g.:
getColor[{x_,y_,z_}]:={Hue[z],Point[{x,y,z}]};
Graphics3D@(getColor/@{{1,1,1},{1,1,0},{0,1,1/2},{1/2,1/2,1/3},{0,1/2,1/2}})
> - is there an expression that colors certain values from the list with a color of my choice? (eg: the mean values from the list are rendered "red")
>
> - and number three: how can i tell mathematica to do the following: take an irrational number such as PI. now create a list according to the following rule: 3.14159265 ....->
> x,y,z
> 3,1,4
> 1,5,9
> 2,6,5
> .,.,.
to get triples of digits of Pi you may use RealDigits and Partition:
Partition[RealDigits[Pi,10,30][[1]] ,3]
>
> looking forward to your tips!
> thank you for your time
>
> markus
>
> www.humanchaos.net
>
>
>