[ncl-talk] How to plot large size data to contour

[Mary Haley]

Tao,

One of the first things I try with contouring large data is to turn on
raster contours by setting:

res at cnFillMode = "RasterFill"

This can sometimes make a significant difference in speed.

If this doesn't help, you can add a second resource:

res at trGridType = "TriangularMesh"

Finally, if you are getting a message:

    fatal:ContourPlotDraw: Workspace reallocation would exceed maximum size
    16777216
    fatal:ContourPlotDraw: draw error
    fatal:ContourPlotDraw: draw error
    fatal:PlotManagerDraw: error in plot draw
    fatal:_NhlPlotManagerDraw: Draw error

Then see this URL, which provides some information about things to try.

http://www.ncl.ucar.edu/FAQ/#err_msgs_012

--Mary


On Thu, Feb 2, 2017 at 6:10 PM, Tao Lu <hakufu.asano at gmail.com> wrote:

> Dear ncl-talk,
>
> I have a large ASCII data (200files, each of them is 2 mb binary).
> The contour plot I want to get need all the files' data.
>
> What I have done now is to convert binary to the ascii format which is
> easy to plot.
> Then each binary data will become 140 mb ascii.
> And it takes more time to plot.
>
> If I have to plot them, with limited memory and fast speed, anyone have
> any idea?
>
> Thank you,
> Tao
>
> --
> ******************************************************
> 盧 涛 (ル タオ) 修士課程2年
>
> 〒112-8551 東京都文京区春日1-13-27
>
> 中央大学理工学研究科都市環境学専攻
>
> 河川・水文研究室（山田正教授）
>
>
> TEL: 03-3817-3406;   Phone: 070-2188-7509
> Email1: hakufu.asano at gmail.com <mail%3Amet.yamos at gmail.com>
> Email2: lutao at civil.chuo-u.ac.jp <mail%3Ayamoto at civil.chuo-u.ac.jp>
> *******************************************************
> ******************************************************
> Tao Lu    (M. Eng)
> Laboratory of River Engineering and Hydrology,
> Dept. of Civil and Environmental Engineering,
> Graduate School of Science and Engineering,
> Chuo University
>
> 1-13-27,Kasuga,Bunkyo-ku,Tokyo
> 112-8551, Japan
> TEL: 03-3817-1805;   Phone: 070-2188-7509
> Email1: hakufu.asano at gmail.com <mail%3Amet.yamos at gmail.com>
> Email2: lutao at civil.chuo-u.ac.jp <mail%3Ayamoto at civil.chuo-u.ac.jp>
> *****************************************************
>
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