I'd been deciding ESRI-Leaflet or ArcGIS JS for a small project. Some findings for our references:
When using FeatureLayer for plenty amount of data (e.g. vast amount of points), ArcGIS JS performs better than Leaflet. So even the file size of Leaflet is far smaller than ArcGIS JS, I still have to choose the larger one.
Hope Leaflet FeatureLayer performance can boost up in future.
Thursday, November 12, 2015
Tuesday, June 23, 2015
True Parallel AsyncTask in Android
Multiple AsyncTask execute() actually execute the tasks sequentially. If the previous task takes a long time to run, the next task can only wait till the previous one finish.
To have a true parallel run, use the following instead of AsyncTask.execute():
AsyncTask.executeOnExecutor(Executor exec, Params... params)
To have a true parallel run, use the following instead of AsyncTask.execute():
AsyncTask.executeOnExecutor(Executor exec, Params... params)
Friday, May 29, 2015
3D translate an element in HTML
To translate the element, you need:
<div style="perspective:500px; margin-left:100px;">
<div style="transform: rotateX(40deg)">
<table border=1>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
...
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
</table>
</div>
</div>
- A container having CSS style "perspective: ___px"
- The actual element having CSS style "transform: rotateX(___deg)"
<div style="perspective:500px; margin-left:100px;">
<div style="transform: rotateX(40deg)">
<table border=1>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
...
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
<tr><td>testing</td><td>testing</td><td>testing</td></tr>
</table>
</div>
</div>
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
testing | testing | testing | testing | testing |
Monday, April 20, 2015
Speed Up the Eclipse IDE
Nice tutorials and references for people who find their Eclipse is kinda slow:
- http://www.nicolasbize.com/blog/7-tips-to-speed-up-eclipse/
Tuesday, April 7, 2015
Install Teclast X80H (FB6M) as Android USB in Windows
Teclast X80H (FB6M) is a dual OS (Windows 8.1 + Android 4.4.4) tablet, to install
- Install the Samsung USB driver
- Restart the computer
- Select Device Manager > The X80H device > Update Driver Software.
- Select Browse my computer for driver software
- Select Let me pick from a list of device drivers on my computer
- Select ADB Interface / Android USB Devices from the list
- Select SAMSUNG Android ADB Interface
http://forum.xda-developers.com/windows-8-rt/general/teclast-x80h-8-dual-os-chinese-tablet-t2996314/post59151938#post59151938
Can Teclast simply provide an adb driver link for customer download easily? ... sigh
Wednesday, April 1, 2015
JavaScript frameworks that we should get touch with
More and more JavaScript framework to work with:
- React.js
- Ember.js
- Knockout.js
- Backbone.js
- Meteor
- Mithril
- Ember
- Vue.js
- Breeze.js
- Ractive
Reference: http://www.breck-mckye.com/blog/2014/12/the-state-of-javascript-in-2015/
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