Friday, 30 September 2016

Georeferrence vector in QGIS

1. get maps EPSG Projection 2953 - NAD83(CSRS) / New Brunswick Stereographic
2. clip vetor - https://www.youtube.com/watch?v=b3c_XRY7oQs
3. create control points - https://www.youtube.com/watch?v=gU05Zh_0d7A
4. captura coordenadas e cria txt:

# linear transformation from xy local to latlong
# 4 maps corners defined
# UL NW
# UR NE
# LR SW
# LL SE
x1 y1sem referencia x1 y1real                                   1    2
x2 y2sem referencia x2 y2real                                   4    3
x3 y3sem referencia x3 y3real
x4 y4sem referencia x4 y4real   

6. Processing>toolbox>advance interface>grass commands>vetor>v.transform.pointsfile

https://www.youtube.com/watch?v=XEaDKUajB5c