Download - processing tabular data

Transcript
Page 1: processing tabular data

PROCESSING TABULAR DATA

Page 2: processing tabular data

Look at Google Earth Image

Page 3: processing tabular data

Look at Google Earth Image

Page 4: processing tabular data

Converting XY Table into Point Feature Class Get longitude (X) and Latitude (Y) from Google Earth

Page 5: processing tabular data

longitude (X) and Latitude (Y) from Google Earth

Save in Excel Convert in Decimal Degree format Add Excel worksheet in ArcMap Add Data > Add XY Data (geographic

coordinate system, WGS 1984) Select a coordinate system for the data Points will be drawn as an event theme in

ArcMap

Page 6: processing tabular data

Convert the event theme to a shapefile or geodatabase feature class

Right-click the file name, select Data > Export Data

Points can be exported to a geodatabase feature class or to a shapefile

Re-project to the UTM coordinate system

Page 7: processing tabular data

Quiz Re-project to the UTM coordinate system

Page 8: processing tabular data

Georeferencing Save Google Earth Image (jpeg) Select Ground Control Points (GCP) At least 3 points are required for Affine

(1st Order polynomial transformation) Add Georeferencing tool bar Apply ‘Fit to Display’ on the image Add GCPs Update Georeferencing when satisfied Rectify for permanent transformation