separate
separate

Configuring the WeatherTrack color scheme

In WeatherTrack the background color for displaying weather layers is configured in a .wtpalette file. This file is in the form of an Apple XML property list, and the top level element is of type dictionary.

The keys for the dictionary are shortcuts for a particular weather layer. The key will also determine the units expected for the values of the color palette. Please note that the displayed value may be different, depending upon user settings. For example even if the user has set temperature to Fahrenheit all internal calculations happen in Celsius.

The currently available weather layers include:

  • AIRTMP - Air temperature in Celsius
  • CAPE - Convective available potential energy in J/kg
  • CIN - Convective inhibition in J/kg
  • CURRENT - Current in knots
  • DPT - Dew point in Celsius
  • GUST - Wind gusts in knots
  • PRMSL - Pressure at sea level in hPa
  • RAIN - Precipitation in mm
  • RH - Relative humidity in percent
  • SEATMP - Sea temperature in Celsius
  • TCDC - Total cloud cover in percent
  • WAV - Wave height in m
  • WCAP_PRB - White cap probability in percent
  • WIND - Wind speed in knots

Each of these may also be suffixed by ~ipad (e.g. AIRTMP~ipad) to make a different color scheme for the iPad. Due to small screen height on the iPhone in landscape view not very many colors fit into the map key without overflowing.

Each of the weather layers is represented as a dictionary with the following possible keys in it:

  • alias - a string pointing to another parameter
  • colorValues - an array of dicts specifying the color palette (required)
  • cutOffIndex - an integer referencing into the above array, do not print numbers for values below that index.
  • invertHiIndex - an integer referencing into the above array
  • invertLoIndex - “

The alias key allows one parameter to use the color values of another parameter, for example to use the same colors for WIND and GUST, the GUST may have an alias with WIND as the string value. This feature is supported since WeatherTrack 1.6.16.

The values invertHiIndex and invertLoIndex are hints to use different color for the number values for better readability above and below the referenced value. Only layers that print numbers on the map like cloud cover or rain use the keys cutOffIndex, invertLoIndex or invertHiIndex.

The colorValues array consists of a dictionary entries having the following keys in it:

  • color - The RGB color value in hex (e.g. A7C2E0)
  • val - a value of the parameter or “inf” for infinity

The colorValues array is required to be sorted in ascending order, and is searched with the incoming parameter value to find a display color. If the incoming value is less than the current val value, the associated color is used. Otherwise the search continues with the next array element. For example the following excerpt for WIND is used as follows:

    <key>WIND</key>
    <dict>
            <key>colorValues</key>
            <array>
                    <dict>
                            <key>color</key>
                            <string>FFFFFF</string>
                            <key>val</key>
                            <string>5</string>
                    </dict>
                    <dict>
                            <key>color</key>
                            <string>E2EBF5</string>
                            <key>val</key>
                            <string>10</string>
                    </dict>
                ...
                    <dict>
                            <key>color</key>
                            <string>C80000</string>
                            <key>val</key>
                            <string>50</string>
                    </dict>
                    <dict>
                            <key>color</key>
                            <string>CC00CC</string>
                            <key>val</key>
                            <string>inf</string>
                    </dict>
            </array>
    </dict>

If the wind speed is less than 5 knots, the color value FFFFFF is used, for wind speeds less 10 knots but more than 5 knots the color E2EBF5 will be used. As a catch all the color CC00CC will be used for wind speeds above 50 knots.

Installing a .wtpalette file

These files can be used via “Open in…” to open the .wtpalette file in WeatherTrack, for example from the iOS mail program to open an attachment from a mail message. Dropbox can also be used to easily share the file from a desktop PC. WeatherTrack copies the .wtpalette file into the Documents and remembers the last imported file as the color scheme to use.

These .wtpalette files can also be managed using iTunes file sharing, where these files can be transferred to or from a desktop PC and also deleted from an iOS device.

The currently active color scheme can also be selected from Settings, where from all installed .wtpalette files can be chosen (plus another built-in WeatherTrack.wtpalette choice).

An example color palette file with a modified WIND color scheme used by the America’s Cup racing team ARTEMIS can be found here.

The color palette file from WeatherTrack version 1.6.15 can be found here.

WeatherTrack- ★★★★★
UK
Richard Hammons on Wednesday, October 30 2013 version 1.5.3
A superb app with great flexibility and reliable. Very detailed worth the money.

Best weather app ★★★★★
USA
by Mahinagirl1234 on Monday, December 31 2012 version 1.4.7
It is easy to use, powerful features and great graphics makes it my first choice for marine weather. You won't be disappointed.

Weather Centre ★★★★★
United Kingdom
by Tony&sharla December 23 2012 version 1.4.8
Everything you could ever want in one place. Easy to download weather maps. Scrap all your other weather Apps and get this one, brilliant.

Great ★★★★★
Pakistan
by Sdrroooo on Friday, August 02 2013 v 1.5.1
A wonderful application. Being professional airline pilot, I find it very helpful and accurate.

Weathertrack ★★★★★
United Kingdom
by Dine December 19 2012 version 1.4.8
What an excellent App, I use this professionally to cross check weather patterns at work... it is very comprehensive and accurate.... well done developers...!!

Captain ★★★★★
Netherlands
by Zeevaart on Monday, December 31 2012 version 1.4.8
As a nautical officer I am using this program all the time ..very Handy and very usefull wheater forecasting program.

Very good product... ★★★★★
Canada
by A Very Nice Guy on Tuesday, December 11 2012 version 1.4.8
The most complete product I have found so fare.
I am a very satisfied customer.

wonderful piece of software - ★★★★★
France
by didier ch on Thursday, August 01 2013 v 1.5.1
wonderful piece of software! Very useful app, easy to use, nice support quick to react: a real must. The "en route" add on makes it even better.

Excelentes - ★★★★★
Portugal
by Saoleonardo on Friday, June 07 2013 v 1.5.0
Very good, one of the best meteorological apps. (Original: muito bom, um dos melhores apps de meteorologia.)

Splendidapp ★★★★★
Italy
by Pierdelapier on Monday, April 29 2013 version v 1.4.9
Really beautiful and especially professional (Original: Veramente bella e soprattutto professionale)

Thanks - ★★★★★
United Kingdom
by Sailing the sea on Monday, March 26 2012 version 1.4.3
Used this for Hong kong to Phillipines was awesome and worth every penny. Thanks finally for a great app

Great app. ★★★★★
Netherlands
by Josephus B on Friday, April 26 2013 version v 1.4.9
Great app. Especially when you are a professional user. (Original: Geweldige app. Zeker als professioneel gebruiker.)

Best weather grib ★★★★★
Netherlands
by Oldgaffer on Thursday, December 13 2012 version 1.4.8
I use this app as a professional mariner on a tugboat.
Its verry handy special on small vessels.

Full Marks!!! - ★★★★★
Italy
by marco mangiacavalli on Monday, November 05 2012 version 1.4.7
Useful and accurate.Indispensabile. money well spent. (Original: pieni voti!!! - utile e precisa. indispensabile. soldi ben spesi)

Thanks - ★★★★★
United Kingdom
by seegdrh on Thursday, March 01 2012 version 1.4.3
Best weather app of them all worth every penny and more.

Best weather forecast ★★★★★
Germany
by PrinzzIII on Tuesday, July 30 2013 v 1.5.1
To look at the weather map tells more than 1000 words. GRIB data in two hours steps, wind, precipitation, air pressure. No one needs more to make a travel plan

Perfect ★★★★
Spain
by dani72 on Tuesday, October 30 2012 version 1.4.7
Does what it says
(Original: Perfecta - Cumple con lo que dice))

We thank our data providers

Copyright © 2011-2015 Best Search Infobrokerage, Inc., All rights reserved. --- Contact --- Disclaimer