Quakemon - Monitor Earthquakes Android App

 

Monitor earthquakes, volcano eruptions across countries with Quakemon.

Stay informed with up-to-date incidents and live camera views, all presented through an intuitive map and list interface designed for quick situational awareness.

Key Features:

1. Multi-Countries Earthquakes Monitoring
View earthquake incidents across supported countries using an interactive map or a clear, scrollable list.

2. Detailed Incident Information
Tap any incident in the list or on the map to view detailed information, including location and incident magnitude.

3. Live Volcano Cameras
Tap a camera marker to instantly view a live, zoomable volcano image for real-time conditions.

4. Powerful Filtering
Filter incidents by tags to hide unwanted information and focus only on what matters to you.

5. Camera Favorites
Save frequently used cameras to a favourites list and reorder them for quick and easy access.

Quakemon makes it easy to monitor earthquake events efficiently and stay informed.

Data Sources

Earthquakes and environmental data used in this app may be provided by:

1. Earth Sciences New Zealand (https://earthscience.nz)
2. Geoscience Australia (https://earthquakes.ga.gov.au)
3. GEOFON program of the GFZ Helmholtz Centre for Geosciences Germany(https://geofon.gfz.de)
4. Institute of Geodynamics - National Observatory of Athens (NOA-IG) Greece (https://bbnet.gein.noa.gr)
5. Istituto Nazionale di Geofisica e Vulcanologia Italy (https://terremoti.ingv.it)
6. Kandilli Observatory and Earthquake Research Institute (KOERI) and Regional Earthquake-Tsunami Monitoring Center (RETMC) Turkey (http://www.koeri.boun.edu.tr)
7. BMKG (Badan Meteorologi, Klimatologi, dan Geofisika) Indonesia (https://data.bmkg.go.id)
8. Natural Resources Canada (https://www.earthquakescanada.nrcan.gc.ca)
9. British Geological Survey (UK) (https://earthquakes.bgs.ac.uk)
10. European-Mediterranean Seismological Centre (EMSC) (https://www.emsc-csem.org)
11. USGS (https://www.usgs.gov)

 Download and try out the Quakemon app from the Google Play Store:

 

Take Geospatial files on the go with the Shapefiler App

 Easily load and visualize multiple GeoJSON and Shapefiles with this powerful mapping tool. The app automatically assigns overlay colors, but you have full control over the styling—customize icons, colors, and opacity through the layer properties menu. Tap on polygons, lines, and markers to view detailed feature attributes. Quickly find specific locations with the built-in free text search, making navigation effortless. Whether you're a GIS professional or a mapping enthusiast, this app provides an intuitive way to explore spatial data on your device. 

Key features

Load multiple Geospatial files: Overlay GeoJSON and Shapefiles over a choice of base map tiles.

Integrated tabular and map views: Tap on a data table record to locate the corresponding feature on the map

Multiple coordinate reference systems: Source Geospatial GeoJSON and Shapefiles in various coordinate reference systems can be reprojected to the standard World Mercator projection for display.

Free text search: Easily search features by text and locate on the map. 

For more detailed information, visit https://dominoc925.blogspot.com/p/shapefiler-help.html. 

Download and try out the Shapefiler app from the following stores:

Batch Convert Coordinates using the Koordinat2 app

 

A batch coordinates conversion tool has been added to the Koordinat2 web app (https://dominoc925-pages.appspot.com/webapp/koordinat2/default.html) to perform bulk coordinates transformation between coordinate systems. 

This post shows how to use the Batch Coordinates Converter.

Launch the Batch Coordinates Converter

1. Use a browser to open the Koordinat2 web app url (https://dominoc925-pages.appspot.com/webapp/koordinat2/default.html).
   
   
   
   
   
2. Tap the hamburger icon on the top left.
   
   The Navigation drawer appears.
   
   
   
   
3. Tap the Batch Coordinates Converter list item.
   
   The Batch Coordinates Converter screen appears.
   
   
   

Define the Primary Coordinate System

1. In the Primary Coordinates card, click the gear icon.
   
   The Primary coordinates selection appears.
   
   
   
2. Select a coordinate system from the list or search for it by clicking the Search icon and typing in the name of the coordinate system e.g. MGRS.
   
   MGRS is selected as the primary coordinate system.
   
   

Define the Secondary Coordinate System

1. In the Secondary Coordinates card, click the gear icon.
   
   The Secondary Coordinates screen appears.
   
   
   
2. Select a coordinate system from the list or search for it by clicking the Search icon and typing in the name of the coordinate system e.g. WGS 84.
   
   WGS 84 geographic is selected as the secondary coordinate system.
   
   

Enter the coordinates and perform the conversion

1. In the Primary Coordinates text field, type or paste in the coordinates to convert.
   
   
   
   
2. Click the right arrow to convert from primary to secondary coordinate system.
   
   The coordinates are converted.
   

   

Convert East North Up (ENU) to/from longitude,latitude and other various coordinate systems

 

The Koordinat2 web app (https://dominoc925-pages.appspot.com/webapp/koordinat2/default.html) has been upgraded to perform coordinate transformation between local coordinate system East North Up (ENU) and many other coordinate systems including MGRS, North East Down, ECEF, geographic longitude/latitude, etc. 

This post shows the typical steps to perform the local ENU conversion to other coordinate systems.

Define the ENU local origin 

The local origin should be as near as possible to the area of interest. If it is too far away, the calculation rounding errors would result in erroneous converted coordinates.

1. Use a browser to open the Koordinat2 web app url (https://dominoc925-pages.appspot.com/webapp/koordinat2/default.html).
   
   The Koordinat2 web app home page appears.
   
   
   
2. Click the hamburger menu icon on the top left.
   
   The Navigation drawer opens.
   
   
   
   
3. Click the Settings item.
   
   The Settings dialog appears.
   
   
   
   
   
4. Choose the item North East Down/East North Up reference origin.
   
   The NED/ENU Reference Origin appears.
   
   
   
   
5. In the dialog, enter the reference origin Longitude, Latitude, and Altitude. Click Save.
   
   The Reference Origin is saved.
   
   

Define ENU as the Primary coordinates (input)

1. In the Primary coordinates card, click the gear icon.
   
   The Primary coordinates selection appears.
   
   
   
   
   
2. Select East North Up from the list or search for it by clicking the Search icon and typing in ENU.
   
   
   
   

Define the Secondary coordinates (output)

1. In the Secondary coordinates card, click the gear icon.
   
   The Secondary coordinates selection appears.
   
   
   
   
   
   
2. Select a desired coordinate system e.g. MGRS from the list or search for it by clicking the Search icon and typing in  MGRS.
   
   
   
   

Enter ENU coordinates

1. In the Primary coordinates card, type in the East, North and Up values.
   
   The ENU values are converted to the secondary coordinates. And a marker appears on the map.
   
   
   
   
   

Trainsity Metro App

 

Navigate public train networks effortlessly with the Trainsity Metro app's high-resolution vector maps. Choose and download the maps you need, enjoying detailed zoom levels without sacrificing storage space. Access all features offline, without needing an internet connection.

Key Features:

High-Resolution Vector Maps: Crisp, clear maps with multiple zoom levels for detailed viewing.
 

Offline Functionality: Download maps and use them anytime, anywhere, without an internet connection.
 

Interactive Stations: Tap on a train station to open Google Maps, view the surrounding area, and get precise routing directions.

Optimized Travel Planning: Use the offline function to calculate the best routes between stations, complete with step-by-step directions and estimated timings. 

Train timetable: View static train line schedules, frequencies, and the first/last departures at individual stations. 

Note: Actual travel times may vary.

Discover a seamless way to explore train networks with our intuitive and efficient app. 

Available maps:

1. Singapore
2. Kuala Lumpur, Malaysia
   
3. Sapporo, Japan
   
4. Recife, Brazil
   
5. Brasilia, Brazil
   
6. Vancouver, Canada
7. Hong Kong, China
8. Bangkok, Thailand
9. Manila, Philippines
10. Osaka, Japan
11. Amsterdam, Netherlands
12. Hanoi, Vietnam  
13. Utrecht, Netherlands
14. Jakarta, Indonesia 
15. Rio de Janeiro, Brazil
16. Palembang, Indonesia
17. Edmonton, Canada
18. Calgary, Canada
19. Sydney, Australia
20. Fukuoka, Japan
21. Paris, France
22. Fortaleza, Brazil
23. Montreal, Canada
24. Rome, Italy
25. Toronto, Canada
26. Lyon, France
27. Algiers, Algeria  
28. São Paulo, Brazil
29. Perth, Australia
30. Ho Chi Minh City, Vietnam
31. Milan, Italy
32. Nuremberg, Germany 
33. Copenhagen, Denmark
34. Sobral, Brazil
35. Natal, Brazil  
36. Doha, Qatar
37. Kaohsiung, Taiwan
38. Daegu, South Korea 
39. Busan, South Korea 
40. Cariri, Brazil 
41. Taipei, Taiwan 

 Download and try out the Trainsity Metro app from the following stores:

 

 

How I fixed the Android Studio current target and jvm target compatibility error

I encountered the following compilation error in Android Studio of one of my Android project about current target JVM compatibility (or incompatibility), as shown in the screenshot message listing below:

 

Execution failed for task ':app:compileDebugKotlin'.
> 'compileDebugJavaWithJavac' task (current target is 1.8) and 'compileDebugKotlin' task (current target is 17) jvm target compatibility should be set to the same Java version.
  Consider using JVM toolchain: https://kotl.in/gradle/jvm/toolchain

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

I managed to fix the problem by ensuring the source and target are compatible, i.e. having the same Java version.

To fix the issue:

1. In Android Studio, select File | Project Structure.
   
   The Project Structure dialog box appears.
   
   
   
   
   
2. Click Gradle Settings.
   
   The Gradle dialog box appears.
   
   
   
   
   
3. In the Use Gradle from combo box, choose 'gradle-wrapper.properties' file.
   
   
4. In the Gradle JDK combo box, choose jbr-17 JetBrains Runtime version 17.
   
   
5. Click OK to close all dialog boxes.
   
   
6. In Android Studio, open the app's build.gradle file in the editor.
   
   
   
7. Within the android construct, add in the compileOptions as shown in the listing below.
   
   

android {
    compileSdk 33

// ...etc...

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_17
        targetCompatibility JavaVersion.VERSION_17
    }
}

From this point on, compiling the app should not throw upany  JVM target compatibility errors.

How I setup OpenCV4Android Java SDK with a blank Android project

Setting up an Android Studio project with OpenCV3 can be a little tricky. The official documentation is still using Eclipse and has not been updated with Android Studio. So setting up OpenCV with Android Studio required some trial and error experimentation. I managed to get a template Android Studio project to load the native OpenCV library with the following steps.

Download OpenCV4AndroidSdk

1. If you have not done so, download OpenCV4Android from this website https://sourceforge.net/projects/opencvlibrary/files/opencv-android/
2. Extract the files into a folder e.g. /path/to/Open-CV-android-sdk/

Create an Android Project with C++ Support

1.  Run Android Studio. Choose Create a New Project.
   
   
2. In the Create New Project dialog box, toggle on Include C++ support.
3. Choose appropriate options and click Next in the following screens.
   
4. Click Finish.
   
   The new project is created.
   

Import the OpenCV module into Gradle

1. In the Android Studio File menu, select File | New | Import Module.
   
   The Import Module from Source dialog box appears.
   
2. In the Source directory field, click the ... button and browse to the downloaded OpenCV4Android files and select the java folder e.g. /path/to/OpenCV-android-sdk/sdk/java/.
3. Optional. In the Module name field, type in a name e.g. :opencv.
4. Click Next and Finish.
   
   The module is imported (with most likely error messages)
   
5. Options. You can download the missing dependencies by clicking the Install missing platforms and sync project link. Or you can edit the OpenCV4Android's build.gradle file to enter the installed dependencies.

Fix OpenCV4Android configuration files

1. In Android Studio, open up the file build.gradle from the imported module opencv module e.g. /path/to/opencv/build.gradle. It may be necessary to change the Project pane to display as project view.
   
   
2. In the editor, changed the compiledSdkVersion to 27 (or any installed version), the targetSdkVersion to 27 (or any installed version).
3. Then sync the gradle project.
   
   The project is synced but now there is an error about the manifest file.
4. Open up the manifest file /path/to/opencv/src/main/AndroidManifest.xml in the editor.
   
   
5. Now, comment out the uses-sdk line as shown in the screenshot above.
6. Sync the project again.
   
   The OpenCV module is successfully configured.

Add the OpenCV module as a dependency to the Android App project

1. In Android Studio, select App in the Project pane.
2. Select File | Project Structure.
   
   The Project Structure dialog box appears.
   
3. Select app. Then click the Dependencies tab. Click +. Choose module dependency.
4. Choose the imported Opencv module.
   
   OpenCV is appended to the list.
   
5. Click OK.
   
   The module is added the Android App project.

Copy over the OpenCV native platform binaries to the Android App project

1.  Open up a File Explorer. Select all the native platform folders under the /path/to/OpenCV-android-sdk/sdk/native/libs/*.
   
   
2. Right click and select Copy.
3. In Android Studio, right click on the app folder (in project view). Choose Paste.
   
   The Copy dialog box appears.
   
4. In the To directory field, change the text to /path/to/myandroid/app/jniLibs/.
5. Click OK.
   
   The native binaries are copied to the project.
6. To enable the Android project to know where the native binaries are, open up the app's build.gradle file in the editor.
   
   
7. Add in the android class, add in the following sourceSets lines:
   
   Note: 'jniLibs' means the jniLibs directory relative to this build.gradle file location.
   

   sourceSets {
       main {
           jniLibs.srcDirs = ['jniLibs']
       }
   }

8. Sync the project.

Load the native library

1.  In the MainActivity Kotlin class, type in the following to load in the OpenCV library.
   
   System.loadLibrary("opencv_java3")
2. If everything is configured properly, then the Android app can be launched successfully.
   
   Now you can make any java/Kotlin calls to the built in OpenCV interfaces.
   

Volcamr New Zealand - Android app for viewing NZ's volcano webcams

Use this Android app to download and display the latest volcano camera still images from New Zealand's GeoNet at http://www.geonet.org.nz/. The following volcanoes can be monitored through the remote webcams: Ruapehu, Ngauruhoe, Tongariro, White Island and Taranaki.

The webcam locations are indicated as clickable markers on a Google Maps backgroud as shown below. 

Download and install this app from the Google Play Store.

Android App for monitoring Washington, DC crime incidents and 311 service requests

This is an Android app for monitoring Washington DC's 311 service request calls and crime incidents. The incidents can be viewed as a text list or as icons or heatmap on a map. Details about the calls can be viewed by tapping an item on the list or on a marker on the map display. A function is available to easily filter away unwanted incidents from the list or map by a text search. The app allows the user to send the incident location to the external Google Maps and/or Street View for better visualization of the incident environment.

Upon launching the app, the list of incidents can be downloaded and displayed with categorized icons, as shown below.

To view all the incidents on a map, simply select the Map option item in the Toolbar menu. Tapping any icon will pop up a snippet of information about the incident. Tapping the snippet will display the incident details.

Long pressing any list item or tapping the arrow icon will pop up a menu, as shown below, where the selected incident can be shared, located on a map, or sent to the Google Maps or Street View apps.

Users can visualise the incidents as a heat map instead of as marker icons. This can be done by choosing toggling the Heat map menu option on in the Tool bar menu, as shown below. To display as marker icons again, just toggle off the Heat map option.

On a table, the app will display a two pane layout - a list on the left and a map view on the right, as shown below.

As on a handset, the incidents can be displayed as marker icons or as a heat map.



Click the badge below to download the app from the Google Play Store.