Search found 55 matches

by yaqiang
June 8th, 2017, 10:35 am
Forum: Trajectory Model
Topic: Display of Other Along-Traj Variables
Replies: 5
Views: 3603

Re: Display of Other Along-Traj Variables

Another option is to write MeteoInfoLab script to extract the variable values from meteorological data along trajetory. There is a online example: http://www.meteothinker.com/examples/me ... _data.html .
by yaqiang
May 18th, 2017, 2:30 am
Forum: MeteoInfo Software
Topic: MeteoInfoLab script - convert ARL or concentration data to netCDF
Replies: 2
Views: 5288

MeteoInfoLab script - convert ARL or concentration data to netCDF

The 'convert2nc' function can be used to convert many data formats to netCDF, including ARL and HYSPLIT concentration data. MeteoInfo 1.4.3R3 or better version is needed. For ARL data: infn = 'D:/Temp/arl/gdas1.jul09.w5' #Input ARL file outfn = 'D:/Temp/arl/gdas1.jul09.w5.nc' #Output netCDF file con...
by yaqiang
April 27th, 2017, 11:34 am
Forum: Users
Topic: Using Hysplit tools with older cdump files
Replies: 15
Views: 4315

Re: Using Hysplit tools with older cdump files

In fact, the data files are not corrupted but they were stored as little endian format. HYSPLIT concentration data normally should be big endian. I don't know if conread or concplot has option to read these little endian data. I just updated MeteoInfo/MeteoInfoLab software to solve this condition (M...
by yaqiang
March 17th, 2017, 8:27 pm
Forum: Users
Topic: Archived Meteorological Data Extract
Replies: 15
Views: 9050

Re: Archived Meteorological Data Extract

ARL or HYSPLIT meteorological data format is not so popular as netCDF or GRIB, so it is not supported directly in most softwares such as NCL and GrADS. But MeteoInfo (which is free and open source) can read/write and display this data format. You can try it from this website: http://www.meteothinker...
by yaqiang
March 2nd, 2017, 9:28 pm
Forum: General questions on meteorological data needed for HYSPLIT
Topic: How to write nx which bigger than 1000?
Replies: 1
Views: 2220

Re: How to write nx which bigger than 1000?

I found the answer from "pakset.f". !==>adjust grid parameters to deal with large grid sizes IF(GV(NG)%NXG.GE.1000.OR.GV(NG)%NYG.GE.1000)THEN ! header record does not support grids of more than 999 ! therefore in those situations the grid number is ! converted to character to represent the 1000s dig...
by yaqiang
March 2nd, 2017, 11:02 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: How to write nx which bigger than 1000?
Replies: 1
Views: 2220

How to write nx which bigger than 1000?

From ARL data format document we know the "I3" was used as string format. (3I3) 1) Number x points, 2) Number y points, 3) Number levels Now I have a data with the number points in x and y directions as 1280 and 640. So how to write x number to ARL data format? How to read out 1280 if only write 280...
by yaqiang
February 27th, 2017, 8:45 pm
Forum: Users
Topic: Clustering with Different Start Heights
Replies: 9
Views: 3776

Re: Clustering with Different Start Heights

Yes, TrajStat can do this job. Please check TrajStat online help document: http://www.meteothinker.com/docs/trajst ... r_cal.html .
by yaqiang
January 5th, 2017, 2:36 am
Forum: Conversion programs
Topic: met text to ARL format
Replies: 6
Views: 4328

Re: met text to ARL format

It's possible to do it with a MeteoInfoLab script. Please find online example on it (http://www.meteothinker.com/examples/me ... b2arl.html).
by yaqiang
November 17th, 2016, 8:22 am
Forum: MeteoInfo Software
Topic: TrajStat Help
Replies: 11
Views: 17295

Re: TrajStat Help

Himanshu wrote:How to use infile data (text file) generated in HYsplit to draw trajectories in trajstat.
Please look at the help documents of MeteoInfo and TrajStat: http://www.meteothinker.com/docs/index.html
by yaqiang
October 8th, 2016, 2:25 am
Forum: Users
Topic: Clustering with Different Start Heights
Replies: 9
Views: 3776

Re: Clustering with Different Start Heights

Hello.. i am doing cluster analysis in hysplit but now i want to try it in trajstat. After drawing all trajectories in trajstat i convert them in line data file (lcd) but when i tried to do cluster analysis it is showing an error " Each trajectory line should has same end points". I am not able to ...