Rabu, 27 Februari 2013

Android App: Height Finder from DsSoft

URL in Google Play:

Ever wonder how tall is the building in front of you? Use this application to find the height of the building in two following step

- Mark the centre of the building on the map.
- Get the elevation by targeting the top of the building.

The height will be then calculated.

Penasaran dengan tinggi gedung di depan anda? Gunakan aplikasi ini untuk menghitung tinggi gedung dalam 2 langkah berikut.

- Tandai tengah-tengah gedung dalam peta.
- Dapatkan elevasi dengan mengarahkan ke puncak gedung.

Tinggi gedung kemudian akan dihitung.

Kamis, 21 Februari 2013

Android App: Distance Finder on Google Map

DsSoft has released an android application to measure the distance between two points on Google Map. The application can be downloaded from Google Play:


"Simple application to calculate distance from current location to a designated target on Google Map. User simply click a target on the map, the great circle distance between two points is then calculated."

Reference: http://en.wikipedia.org/wiki/Great-circle_distance

Senin, 18 Februari 2013

Benchmarking the Hijriyah App from DsSoft

Android Hijriyah Calendar app V1.1.1 from DsSoft:


has received new following features:

  • Implementation of parallax correction to geocentric lunar equatorial position.
  • Implementation of standard atmospheric refraction offset for elevation angle.

In this post, we will compare the results of lunar position calculation from the app with Geoscience Australia. The following procedures are followed.
  1. Open "Hijriyah Calendar" app in your mobile.
  2. Firstly change the location to Pelabuhan Ratu by clicking setting button .
  3. Enter location 106°33'E 6°59'S for Pelabuhan Ratu, Indonesia.

  4. Click OK. 
  5. In the main screen, look for sun set information in the hilal information of current month, e.g. 2012-02-10 18:19. 
  6. Go to Geoscience Australia web page http://www.ga.gov.au/geodesy/astro/smpos.jsp.
  7. Enter the location longitude 106°33'E latitude 6°59'S and the time obtained in step 5, i.e. 02/10/2013,18:19:00. Then select "Compute".
  8. The following results are from Geoscience Australia.

Sun or Moon Position Results

   Lat= -6°59'00"  Long=+106°33'00"  Height=0.0m

Time zone: +7.00 hours
Altitude includes astronomical refraction angle for a standard atmosphere.
   Date      Time     Refraction    Azimuth     Altitude
10/02/2013 18:19:00    00°00'00"   261°00'49"   -2°09'53"

Computed using National Mapping Division's sunmoonposn program, version 1.1

The results from the app showing azimuth 261°01'08" and -2°04'33" at 02/10/2013 18:19, which is the sun set time at which the hilal of Rabiul Akhir 1434 H is observed.

Hence, the results obtained from the app and Geoscience website differ less then 1' for azimuth and around 5' for the altitude.

Selasa, 12 Februari 2013

New Update on Hijriyah Calendar App

There is a new screen added to Hijriyah Calendar App from DsSoft:


It contains the hilal information of current and next months. It contains useful information for determining start and end of hijriyah months. It also useful especially for hilal observers to know the hilal location.