Ngl.wmstnm
Draws station model data.
Available in version 1.3.0 or later.
Prototype
Ngl.wmstnm(wks, x, y, imdat)
Arguments
wksThe identifier returned from calling Ngl.open_wks.
x, yScalars, one-dimensional NumPy arrays or Python lists specifying the coordinate positions for plotting the station model data. When plotting station model data over a map these coordinates should specify latitude and longitude values in degrees (in that order in the argument list). Also, when plotting station model data over a map the Ngl.wmstnm procedure must be made aware of that by making the call:
Ngl.wmsetp("ezf",1)imdat
A string (or array) of 50 characters encoded as per the WMO/NOAA guidelines. If an array, it must have the same shape as the x and y arrays. In more detail (where the characters are numbered from left to right, starting at character number 0):
character 0 | = | iR | - | the precipitation data indicator |
character 1 | = | iX | - | weather data and station type indicator |
character 2 | = | h | - | height above ground of base of lowest cloud |
characters 3-4 | = | VV | - | visibility in miles and fractions |
character 5 | = | N | - | total amount of cloud cover |
characters 6-7 | = | dd | - | direction from which wind is blowing |
characters 8-9 | = | ff | - | wind speed in knots |
character 11 | = | sn | - sign of temperature |
characters 12-14 | = | TTT | - current air temperature |
character 16 | = | sn | - sign of temperature |
characters 17-19 | = | Td | - dew point |
characters 21-24 | = | PO | - station pressure (not plotted) |
characters 26-29 | = | PPPP | - pressure reduced to sea level |
character 31 | = | a | - characteristic of barograph |
characters 32-34 | = | ppp | - pressure change, last 3 hrs. |
characters 36-38 | = | RRR | - precipitation |
character 39 | = | tR | - time duration of precipitation |
characters 41-42 | = | ww | - present weather |
character 43 | = | W1 | - most significant past weather |
character 44 | = | W2 | - 2nd most sig. past weather |
character 46 | = | Nh | - Fraction of sky cover |
character 47 | = | CL | - cloud type, low clouds |
character 48 | = | CM | - cloud type, medium clouds |
character 49 | = | CH | - cloud type, high clouds |
Return value
NoneDescription
The appearance of the wind barbs that are part of the station model data is controlled by the parameters that control wind barbs. See the procedure Ngl.wmbarb for details. The procedure Ngl.wmsetp is used to set parameter values, and the function Ngl.wmgetp is used to retrieve parameter values.
It is frequently the case that station model data are drawn over a world map. See Ngl.wmbarbmap and the examples listed below in the examples section.
In addition to the wind barb parameters, the parameters WBC and WBL apply to the station model display. WBC specifies the diameter of the sky cover circle at the base of the wind barb and WBL specifies the size of the text labels in the station model display.
The procedure Ngl.wmstnm does not call Ngl.frame.
See Also
Ngl.wmbarb, Ngl.wmbarbmap, Ngl.wmgetp, Ngl.wmsetp
special resources: nglDraw, nglFrame, nglMaximize, nglScale
Examples
See:
wmstnm01.py (and its output).
wmstnm02.py (and its output).
wmstnm03.py (and its output).