Week 8 Assignment #15

Retrieve Historical Imagery

First I searched for Samut Songkhram, then I added the Light Gray Canvas layer. After that, I added the Multispectral landsat layer.

Show Imagery Over Time

I enabled the time animation tool and adjusted its speed to one of the lowest settings it could be.

After adjusting the speed of the time animation. I also adjusted the length of each interval, changing it from five years to one year. I also rearranged the dates to be from 07/24/1972 at 12:00am to 01/01/1980 at 12:00am.

​Decade	Date
1970s	12/15/1978
1980s	N/A
1990s	10/24/1994
2000s	12/14/2004
Most Recent	12/13/2021

1970s:

1980s: Not Available

1990s:

2000s:

Most Recent:

Link to web app: https://uhm.maps.arcgis.com/apps/webappviewer/index.html?id=54ddbb28c4bb40d9b5269fb1a4fc29cc

Reflection:

This week's assignment showed me how much information we have at our fingertips. By creating maps which utilize timelines to display the progression or regression of an area's vegetation or urban development. I find that this could be very useful especially for environmentalist and urban planners to gain information of how developing land could impact one's surroundings.