Field Calculator in QGIS

February 21, 2017 zulkarnainh 0

In QGIS, if you want to calculate the real geometries (such as area, parameter, length etc.) of polygon/point based on the current coordinate system, we need using the field calculator.  If we use this calculator, we able to show the […]

Menukar sistem koordinat menggunakan ArcGIS

January 26, 2017 zulkarnainh 0

Bila dapat shp files dari client dalam sistem koordinat kertau, mesti pening kepala. Mananya tidak, saya adalah pengguna QGIS dan function “on the fly” CRS transformation dalam QGIS sangat tidak membantu, berbanding function yang sama dalam ArcGIS. That why, ArcGIS sangat […]

Example of Bootstrapping

December 2, 2016 zulkarnainh 0

In a statistical analysis, bootstrapping is a popular technique, especially useful when the sample size is small. It is involved with resampling and the technique is assume nothing about the distribution of our data. It is noted that a small […]

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Climate Extremes Indices (Re-post)

September 29, 2016 zulkarnainh 0

I obtained a good post (link) on the climate extremes indices. The post as follows: Currently, the ET recommends 27 core indices (the ‘ETCCDI’ indices) that are calculated for the globe using the  RClimDex/FClimDex software.