(View the complete code for this example.)
When you specify NOAASET=NX3TVS, you retrieve data that show an intense gate-to-gate azimuthal shear associated with tornadic-scale rotation. This example shows how to search the NX3TVS database by using the RADIUS= and CENTER= options to retrieve tornado vortex signature data for the date range from May 5 to May 16, 2006. The output is shown in Output 50.5.1.
options validvarname=any;
title 'Tornado Vortex Signatures with CENTER= and RADIUS= Options for a Date Range';
libname mylib "/sasusr/noaa/doc/";
libname noaa sasenoaa "%sysget(NOAA_DATA)"
noaaset=nx3tvs
range='20060505:20060516'
radius='15.0'
center='-102.0,32.7'
outxml=my2CR
automap=replace
mapref=MyMap
xmlmap="%sysget(NOAA_DATA)my2CR.map"
format=xml
;
data mylib.TVS2CR;
set noaa.my2CR;
run;
proc contents data=mylib.TVS2CR; run;
proc print data=mylib.TVS2CR(obs=10); run;
Output 50.5.1: NX3TVS Data Search Using CENTER= and RADIUS= Options
| Tornado Vortex Signatures with CENTER= and RADIUS= Options for a Date Range |
| Obs | ztime | wsr_id | cell_id | cell_type | range | azimuth | max_shear | mxdv | shape |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2006-05-05T00:05:50 | KBMX | Q0 | TVS | 7 | 217 | 403 | 116 | POINT (-86.8535716274277 33.0786326913943) |
| 2 | 2006-05-05T00:10:02 | KBMX | Q0 | TVS | 5 | 208 | 421 | 120 | POINT (-86.8165772540846 33.0982820681588) |
| 3 | 2006-05-05T00:12:34 | KSJT | P2 | TVS | 49 | 106 | 17 | 52 | POINT (-99.5771091971025 31.1421609654838) |
| 4 | 2006-05-05T00:17:31 | KSJT | B4 | TVS | 40 | 297 | 25 | 62 | POINT (-101.188161700093 31.672392833416) |
| 5 | 2006-05-05T00:29:13 | KMAF | H4 | TVS | 53 | 333 | 34 | 111 | POINT (-102.664426480293 32.7306917937698) |
| 6 | 2006-05-05T00:31:25 | KLBB | N0 | TVS | 51 | 241 | 24 | 78 | POINT (-102.70047613441 33.2380072329615) |
| 7 | 2006-05-05T00:33:25 | KMAF | H4 | TVS | 52 | 334 | 46 | 145 | POINT (-102.6393683028 32.7226656893341) |
| 8 | 2006-05-05T00:37:37 | KMAF | H4 | TVS | 50 | 334 | 34 | 107 | POINT (-102.621904684258 32.6927081076156) |
| 9 | 2006-05-05T00:41:51 | KMAF | H4 | TVS | 51 | 335 | 29 | 91 | POINT (-102.614794815627 32.714139844846) |
| 10 | 2006-05-05T00:44:33 | KLBB | N0 | TVS | 46 | 245 | 35 | 100 | POINT (-102.643380529494 33.3266446067682) |