t.create.html 1.7 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657
  1. <h2>DESCRIPTION</h2>
  2. <em>t.create</em> is used to create space time datasets of
  3. type raster (STRDS), 3D raster (STR3DS) and vector (STVDS).
  4. <p>
  5. Space time datasets represent spatio-temporal fields in the temporal
  6. GRASS framework. They are designed to collect any amount of time
  7. stamped maps with time intervals and time instances. The temporal
  8. type of a space time dataset can be absolute (means with a fixed date)
  9. or relative (only sequential maps) and must be set during
  10. dataset creation along with the name and the description.
  11. <p>
  12. Time stamped maps can registered in and unregistered from space time
  13. datasets. The spatio-temporal extent as well as the metadata of a space
  14. time dataset is derived from its registered maps. Hence the metadata is
  15. dependent from the dataset type (raster, 3D raster, vector).
  16. <h2>EXAMPLE</h2>
  17. <h3>Absolute STRDS dataset</h3>
  18. Create a raster space time datasets
  19. <div class="code"><pre>
  20. t.create type=strds temporaltype=absolute \
  21. output=precipitation_monthly \
  22. title="Monthly precipitation" \
  23. description="Dataset with monthly precipitation"
  24. </pre></div>
  25. <h3>Relative STVDS dataset</h3>
  26. Create a vector space time datasets
  27. <div class="code"><pre>
  28. t.create type=stvds temporaltype=relative \
  29. output=precipitation_monthly_30y \
  30. title="Monthly precipitation 30 years" \
  31. description="Test dataset with monthly average \
  32. precipitation in the last 30 year"
  33. </pre></div>
  34. <h2>SEE ALSO</h2>
  35. <em>
  36. <a href="t.register.html">t.register</a>,
  37. <a href="t.remove.html">t.remove</a>,
  38. <a href="t.info.html">t.info</a>
  39. </em>
  40. <h2>AUTHOR</h2>
  41. S&ouml;ren Gebbert, Th&uuml;nen Institute of Climate-Smart Agriculture
  42. <p><i>Last changed: $Date$</i>