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  • strict warning: Non-static method view::load() should not be called statically in /home/arf_nkt/mapaspects6/sites/all/modules/views/views.module on line 1118.
  • strict warning: Declaration of views_handler_argument::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_argument.inc on line 917.
  • strict warning: Declaration of views_handler_argument::query() should be compatible with views_handler::query($group_by = false) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_argument.inc on line 917.
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  • strict warning: Declaration of views_handler_filter::query() should be compatible with views_handler::query($group_by = false) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_filter.inc on line 599.
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  • strict warning: Declaration of views_plugin_argument_validate_taxonomy_term::options_submit() should be compatible with views_plugin_argument_validate::options_submit(&$form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/modules/taxonomy/views_plugin_argument_validate_taxonomy_term.inc on line 165.
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  • strict warning: Declaration of views_plugin_row::options_validate() should be compatible with views_plugin::options_validate(&$form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/plugins/views_plugin_row.inc on line 136.
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  • strict warning: Declaration of views_handler_argument::query() should be compatible with views_handler::query($group_by = false) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_argument.inc on line 917.
  • strict warning: Declaration of views_handler_sort::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Declaration of views_handler_sort::options_submit() should be compatible with views_handler::options_submit($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Declaration of views_handler_sort::query() should be compatible with views_handler::query($group_by = false) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Declaration of views_handler_filter::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_filter.inc on line 599.
  • strict warning: Declaration of views_handler_filter::query() should be compatible with views_handler::query($group_by = false) in /home/arf_nkt/mapaspects6/sites/all/modules/views/handlers/views_handler_filter.inc on line 599.
  • strict warning: Declaration of views_handler_filter_node_status::operator_form() should be compatible with views_handler_filter::operator_form(&$form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/modules/node/views_handler_filter_node_status.inc on line 15.
  • strict warning: Declaration of views_plugin_argument_validate::options_submit() should be compatible with views_plugin::options_submit($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/plugins/views_plugin_argument_validate.inc on line 87.
  • strict warning: Declaration of views_plugin_argument_validate_taxonomy_term::options_submit() should be compatible with views_plugin_argument_validate::options_submit(&$form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/modules/taxonomy/views_plugin_argument_validate_taxonomy_term.inc on line 165.
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  • strict warning: Declaration of views_plugin_query::options_submit() should be compatible with views_plugin::options_submit($form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/plugins/views_plugin_query.inc on line 181.
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  • strict warning: Declaration of views_plugin_row::options_validate() should be compatible with views_plugin::options_validate(&$form, &$form_state) in /home/arf_nkt/mapaspects6/sites/all/modules/views/plugins/views_plugin_row.inc on line 136.

Generating hydrology from SRTM data

Sun, 2006-10-01 19:15 — nico

In terrain with some topographic relief a DEM can be used to estimate the position and relative volume of streams under the principal that all streams flow downhill.

 

STEP 1. Get SRTM data online.

Download the tiles in Arc/Info ASCII if possible, or use HGT or BIL format. DTED is a little more difficult to work with.

SRTM data in 3 arc sec (90m) resolution can be found in either 'research' or 'finished' grade http://SRTM.USGS.GOV (Thanks to NASA and the USGS)

'Finished' grade SRTM data is now available to the public. Finished grade has speckling holes filled and (significantly, for hydrology studies) it has larger rivers "burned in" to the SRTM.

Week 1 - Introduction to ArcGIS and acquiring new data

Classroom topics:

  • Structure of the class.
  • Introduction to GIS
  • Applications in anthropology
  • Strengths, weaknesses, and critiques
  • Topics we will cover in this 10 week course

In Class Lab -- Week 1

Part I - Create a shapefile and digitize from a satellite image.

In this exercise we will learn how to create a polygon shapefile by digitizing the polygon from an satellite image of the pyramids of Giza.

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