Author Archives: zulkarnainh

About zulkarnainh

I was born in Melaka (1987), holds the degree in B.Eng.(2010), M.Eng (2012) and Ph.D. (2016) in Civil Engineering at Universiti Teknologi Malaysia. I have been the UniMAP since 2016 and currently serving as Senior Lecturer. Feel free to contact me if you are interested to collaborate or pursuit a study (Master or Ph.D.) with me. Thank you!

Normalize values in a matrix to be between 0 and 1 (Matlab Tips)

I’m run a function in Matlab and it requires a matrix of variables within 0 and 1. The way to normalize the values to be between 0 and 1, and transform back to the original matrix as follows: b = … Continue reading

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Multiple colors to features within a single shapefile

I have received one shape file from a friend, who has a lot of features and attributes. However, it is within a single shapefile. So, it is difficult to me to recognise their features, since QGIS is only displayed one colour. … Continue reading

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Soil & Water Assessment Model (SWAT) in QGIS

It is a good news that SWAT can be run in QGIS. This integration is known as QSWAT and can be download from the official website of SWAT (http://swat.tamu.edu/). I include a good tutorial that I found on the internet … Continue reading

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Import “starred places” into a My Map

There is a situation, you have saved several places in Google Maps and you want to display all those places in one map in Google Maps. How to do it? It is a way to do it, by using My … Continue reading

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Using HEC-GeoRAS for the HEC-RAS modelling (Videos Expired!)

Note: All video tutorials have been expired!. I will make the videos to replaced expired videos soon. Sorry for the inconvenience caused. – zulkarnain If you do HEC-RAS for the flood or water quality modeling, HEC-GeoRAS may help you. In … Continue reading

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Field Calculator in QGIS

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 … Continue reading

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How to export string with timeperiod to .dat file? (Re-Post)

Here a question (original link) that I ask at Matlab Community that the reader may found useful. Question: I have a large string that containing time period such as 23-May-2009 02:00:00 (as attached). Variable editor in Matlab is unable to display … Continue reading

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Menukar sistem koordinat menggunakan ArcGIS

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 … Continue reading

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Example of Bootstrapping

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 … Continue reading

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