Workshop on OSHW
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The document discusses measuring coffee holding capacity in an office and importing CSV data from weather station sensors into GIS software like QGIS and GRASS. It includes steps for reading CSV files in QGIS, converting CSV point data to a shapefile using Python-OGR, importing CSV data into a GRASS location and exporting it to a shapefile, and a Python script for the same process in GRASS that can also be run externally.
![Preambule
#Run this script in the terminal as:
#python oshw_pygrass.py
#For debugging, run as:
#python -i oshw_pygrass.py
#PURPOSE
#Import a CSV [X,Y,Z,DATA] file in GRASS GIS
#Also export to shp out.](https://image.slidesharecdn.com/workshoponoshw-141201001601-conversion-gate02/85/Workshop-on-OSHW-53-320.jpg)
Workshop on OSHW
- 2. … Measuring coffee holding capacity in office
- 3. … ?
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- 6. … ○○○ ●
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- 13. ➢➢➢ ❖ ➢➢➢➢➢ ❖
- 14. ○○○○ ● ○○ ●
- 16. …
- 17. • •
- 19. • •
- 20. • •
- 21. • • •
- 22. DATA RECORDS FROM SENSORS
- 24. ➢ ○ ➢ ➢ ➢ ➢ ➢ ○
- 28. … …
- 30. …
- 31. QGIS We will see how to read CSV files from the Weather Station in QGIS
- 39. Python-OGR This section shows how to code in Python-OGR the import and conversion of CSV point data into a shapefile
- 40. •••••••••
- 42. • • •
- 47. … … … … … …
- 48. … … … … … … … … … …
- 50. GRASS To import in GRASS, first create a “LL”(Geographical, Lat/Lon) Location from scratch. Then follow the next slide.
- 51. Import in GRASS export to shapefile
- 52. pyGRASS This pyGRASS code is running from within a GRASS session, though it can be run externally too. It is following the same procedure than in GRASS command line, but adds more scripting control.
- 53. Preambule #Run this script in the terminal as: #python oshw_pygrass.py #For debugging, run as: #python -i oshw_pygrass.py #PURPOSE #Import a CSV [X,Y,Z,DATA] file in GRASS GIS #Also export to shp out.
- 54. Set variables
- 55. Libraries
- 56. Set message reporting to GUI
- 57. Read CSV file from CLI argument
- 58. Import in GRASS create a shapefile
- 59. …
- 60. Libraries
- 61. Libraries, more
- 63. I/O
- 65. Khob Khun Na Krub