DATA MENU
Custom data plots

Plots data on the workchart from a custom data file.

Note that whether a point of data is plotted DOES depend on the Preferences > Station Plots > Plot All Stations settings. To see absolutely all datapoints, check this setting so all points are plotted, otherwise they will be plotted in a way that minimizes overlapping.

A custom data file comprises a package of data that can be readily imported into Digital Atmosphere. You can create this data by any means (using third-party programs).

The custom data field must always be placed in the file CUSTOM.DAT in your Digital Atmosphere directory. It should be structured according to the following example:

THUNDERSTORM DAYS (ALL MONTHS)
US AL:Bir 722280 33.567 -86.750 57 *

US AL:Oza 722269 31.283 -85.717 73 *

US AL:Hun 723230 34.650 -86.767 54 *

US AL:Mon 722265 32.383 -86.367 56 *

Here is a breakdown of each row and column:

Row 1 A header that will be used by Digital Atmosphere to title the field
Row 2+ Data, as explained below in "data row format"

Data row format:

Column 1-19 Not used. The user may wish to put location names here.
Column 21-29 Latitude (degrees and thousandths; negative is southern hemisphere)

Column 31-39 Longitude (degrees and thousandths; negative is western hemisphere)

Column 41-49 Primary data value

Column 51-59 Secondary data value

Ingesting a scalar field. When a simple scalar field (such as temperature, pressure, wind speed, etc) is imported, the value must be placed in the primary data value field, and the secondary data value field must contain an asterisk character: *.

Ingesting a vector field. If a numerical value is detected in the secondary data value field, Digital Atmosphere will assume a vector field (such as wind u/v component) is being ingested. The primary data value must assume a direction relative to true north (such as wind direction), and the secondary data value must assume a magnitude (such as wind speed). When vector data mode is being used, analysis calculations will use wind barb symbology to represent data elements.