###A straight-forward guide to data collection using Terrasync
#Part 1 - In the Field
- Open Terrasync
- Tap on Start
- Tap on TerraSync
- Data Mode
- In the top left, you will see you are in the ‘Status’ mode, for data acquisition we want to be in ‘Data’ mode.
- Tap the arrow next to status and select ‘Data’
- New file
- By default, selecting data should bring up ‘Create New Data File’ dialogue and options. If not, click the arrow belonging to the button below ‘Data’ and select ‘New File (T)’
- A dialogue with options is brought up. Here, the default settings are fine, but it helps to enter a memorable name for the file and to remember the location of where you are saving the file, which is either on the card or on the device (Default / SD-MMC card). A folder can be specified later.
- Tap ‘Create’
- Antenna Height
- You are prompted to enter the height of the antenna
- Type of Geometry – Point, Line, Area
- Which type of geometry would best represent the feature you are GPS’ing?
- Once you select, data recording begins.
- Data points are being collected now, so either walk if you are representing a line or an area, or stand in place if you are collecting data for a point. For a point, 40 seconds may be required for sufficient accuracy.
- Multiple features
- If you have a single feature to collect you may tap ‘OK’ and then ‘Close’ the file. Otherwise, keep on collecting data for the feature using multiple geometries if needed.
- Once you have collected enough data, you may tap ‘OK’ and ‘Close’
- Multiple Features
- Once you have acquired data for one feature, another may be created (by selecting again ‘New File) And existing features may be added to (by selecting ‘Existing File’ > choosing the file > selecting ‘Open’)
#Part 2 - At the Computer
Enter ‘Data’ Mode
- File Manager
- Below ‘Data’ select ‘File Manager’ (same place you’d see ‘Existing’)
- Find data
- “Choose File Type” should be “Data Files”
- “Location” is where you saved your files to when you were in the field. If you don’t see your data, change it.
- Convert data
- Select one of the files you created
- Tap on ‘Options’ in the top right and select ’Write data to Shape’
- The prompt asks for a location of the file, enter a new name and this will create a unique folder for the file*
- Prompt says, “The folder __ does not exist. Would you like to create it?” Select ‘Yes’
- Results should read “Shape conversion complete” you may select “Close”
- Repeat for other files naming new folders each time to avoid overwriting data.
- Transferring data
- Plug in GPS to computer
- Open folder where data was saved
- Copy to desktop
- Open QGIS
- Drag and drop data folders into QGIS
- Select Coordinate Reference System (Usually WGS 84 – EPSG: 4326)
#####*The shapefile that is created is given a generic name based on its geometry e.g. ‘Line_gen.shp’. If saving multiple files to one folder, matching geometries will be overwritten. Unique names for each file will subsequently create unique folders and avoid overwriting data.