# Lecture 4: Surface and field analysis

Download lecture 4 part 1 from [here](https://github.com/souravbhadra/GIS5120/blob/main/lectures/lectures-pdf/lecture-4-part-1.pdf).

Download lecture 4 part 2 from [here](https://github.com/souravbhadra/GIS5120/blob/main/lectures/lectures-pdf/lecture-4-part-2.pdf).

Download lecture 4 part 2 from [here](https://github.com/souravbhadra/GIS5120/blob/main/lectures/lectures-pdf/lecture-4-part-3.pdf).