BioBase Data Use in ArcGIS 10x
Tutorial 2: Creating transects in ArcMap
or Google Earth and transferring to .gpx
for import into Lowrance
© Navico, Inc. 2014
Create “Fishnet” (ArcToolbox – Data management)
Transect Spacing
Start editing and delete all undesired rows or columns
Use Editor, Select, Rotate, Move, and Copy Paste Tools
to optimize transect orientation (if needed)
Rotate editing tool
Clip to the study boundary
Update and calculate Transect Distances
Right click on Shape_Leng and
Calculate Geometry to update
polyline lengths after clip.
After field has been updated right click and get statistics (sum). Add
the distance from N to S (e.g., the length of the lake since you’ll be
driving between transects). Estimate speed to pre-plan a trip
Editor, select all features, merge polylines to create a
single .gpx track
Arc Toolbox, data management tools, projections and
transformations, project to WGS 1984
Try Creating Transects with Google Earth
Use measure tool to get visual for
appropriate spacing
Add a path
Right click on the path and Save As .kml (Keyhole Markup
Language)
Creating a .gpx file and importing into HDS
• MN DNR GPS Application Converts .shp to .gpx
• http://www.dnr.state.mn.us/mis/gis/DNRGPS/DNRGPS.html
Open DNR GPS and “ load from file” a .shp or .kml ; Save to a
.gpx
Save track to .gpx and transfer to a SD
card to load into your Lowrance™.
If the transects do not automatically
load, import the file