Re: File size 5.5MB

*To*: mathgroup at smc.vnet.net*Subject*: [mg126445] Re: File size 5.5MB*From*: A Retey <awnl at gmx-topmail.de>*Date*: Fri, 11 May 2012 00:12:50 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <jog02s$g2c$1@smc.vnet.net>

Hi, > Very new to CDF format of Mathematica, but concerned at the file size > of a simple file. > > Something as simple of this, along with its output, is 5.5MB. How > come? Because it contains 3 nontrivial 3d vector graphics? I won't argue that this could not probably be done more efficient, but it isn't that bad that I'd consider it a real problem (if you look into the file or the cell expressions you will find that the graphics content even is compressed by default). Maybe you want to explain what your problem with the file size exactly is, so we can suggest what you can do to solve that particular problem. There are various ways to get your files smaller, maybe simple settings like: ContourPlot3D[ r*(1 - u/q) - u/(1 + u^2) == 0, {r, 0, 1}, {q, 0, 10}, {u, 0, 10}, AxesLabel -> {r, q, u}, MeshFunctions -> {#1 &}, Mesh -> 9, PlotPoints -> 5, MaxRecursion -> 2] will already be sufficient for what you want to achieve, but as another extreme you could create very small rasterized "previews" in the file and recreate the full 3d vectorgraphic only when the user wants to interact with it. That possibility is the real benefit of using CDF instead of e.g. PDF. Of course things like that need a little extra effort, here is an example: With[{ code = Hold@ContourPlot3D[ r*(1 - u/q) - u/(1 + u^2) == 0, {r, 0, 1}, {q, 0, 10}, {u, 0, 10}, AxesLabel -> {r, q, u}, MeshFunctions -> {#1 &}, Mesh -> 9 ] }, DynamicModule[{content = Button[Rasterize @@ code, content = ReleaseHold[code], Appearance -> None]}, Dynamic[content] ] ] it will create a rasterized graphics as a static preview. If you save that file it will be about 50kB for me (that would be about 150kB for three such graphics). Only when the user clicks on the graphics it is replaced with the interactive 3d graphics. Of course you probably might want to improve that so it becomes clearer to potential users/readers how to use it and what is going on while the 3d graphics is recreated. hth, albert