The purpose of this note is to consider reliability of data and feasibility to conduct analysis regarding Thai Industrial location. We use“BOI-promoted company directory 2013-2014”as a source. By using R (Ver．3.0)，a statistical analysis environment, we settable and drew chropleth map.
In conclusion, by correcting the data carefully and adding some data to the data, we are able to use it for further analysis. Then, we should take care of some errors of the data. Moreover, while considering promotion policy by BOI, we are able to conclude more fruitful and evident conclusion.