StarHydro 20070727(alpha) released

This build focuses on UI improvements, other improvements are minor…

It is a minor update to yesterdays build.

It features:
- Units on regionalization form
- Fixed hypsometric curve
- Added "Tip" on Watershed page
- Added "Tip" on Horton nr page

Updates are as always available at: http://web.mit.edu/star/hydro

StarHydro 20070726(alpha) released

This build focuses on UI improvements, other improvements are minor…

• When starting application, dialog prompts user to select map to work with
• Watershed view is updated, and units are added
• User can type stream accumulation threshold
• Network view is split in: Horton nr and Width fns
• Horton nr split view in charts and separates log scale & trend line controls
• Horton charts colors corresponds with "stream order network" i.e. points on the chart have appropriate color as stream order on the map

• Width functions are split to 3 charts for easier usability
• All tabs are redone with new layout manager and labels are added to sections (Look & Feel change)
• IUH chart colors correspond to "Simple Instant Unit Hydrograph" layer colors
• Some chart colors correspond to map
• All chats have a little diskette next to them, clicking on diskette reveals data in the charts
• There is a button in status bar that allows user to see coordinates where mouse intersects map

StarHydro 20070717(alpha) released

This build is focused on improvements on regionalization worker. Other improvements are minor...

StarHydro is available at http://web.mit.edu/star/hydro

• Implement regionalization worker to include:
• |Avg (Xi) - XL| <> deltaAvg
  
• |Any(Xi) - XL| <> deltaAny
  

• Regionalization
• Units
• How to set a variable so that it is not used?
• No decimal numbers for parameters
• Not too sensitive to aspect

• Change topo -> Topological
• Export regionalization data ($HOME/starhydro_workspace/points.export)
• Format (tab separated file)

Id Area isChannel

Center_of_mass [x-z]

Elevation Slope Aspect

Downstream_Id

Flow_path_length

Downstram_channel_id

Flow_path_to_channel_length

• Regionalization PDF Charts (added to PDFns)
• Regionalization PDF area chart
• Regionalization layers (colored, non-colored and channel)

How to generate Star Hydro datasets?

Star Hydro analysis starts with loading of terrain maps.

Layers required to perform analysis are:

Projected terrain

Pit filled terrain

Flow accumulation

Flow direction (D8)

Star Hydro at this time (7/9/2007) assumes that all layers coordinates are in meters.

At this time it is suggested to place files in:

$HOME/starhydro_workspace/StarHydro and load them using "File->Open->StarHydro".

On Windows XP folder is usually:

c:\documents and settings\(your user name)\starhydro_workspace

On Mac OS X and Linux it is:

/home/(your user name)/starhydro_workspace

I'm working on File manager that will make this easier.

USGS seamless map can be converted to Star Hydro using Arc Workstation using following scripts:

Gridname is the name of the grid in the Arc Workstation's workspace

Projectionfile is the file describing input paramters and output units (ZUNITS METERS, UNITS METERS).

%% Project using projection file from below

project grid gridname projected projectionfile

gridascii projected projected.xyz

%% Pit filling using ESRI fill method

grid

fill projected filled sink

quit

gridascii filled filled.xyz

%% Calculate flow direction

grid

flowdir = flowdirection( filled )

quit

gridascii flowdir flowdir.xyz

%% Calculate flow accumulation

grid

flowacc = flowaccumulation( flowdir )

quit

gridascii flowacc flowacc.xyz

---

%% To find original grid projection parameters use:

describe gridname

Sample projection parameters (projectionfile.prj):

INPUT

Projection GEOGRAPHIC

Datum NAD83

Zunits METERS

Units DD Spheroid GRS1980

PARAMETERS

OUTPUT

PROJECTION UTM

DATUM NAD83

ZONE 18

ZUNITS METERS

UNITS METERS

PARAMETERS

END

StarHydro 20070710(alpha) released

StarHydro is available at http://web.mit.edu/star/hydro

Release notes for 2007/07/10

Important note

Update to the format of local cache requires it to be cleared between version 20070707 and 20070709!

New features

Post information how to build datasets

Please Look at StarHydro datasets on instructions how to build your own dataset.

Change local format to XYZ

Local format of cache is now text XYZ coordinates for filled, flowacc, flowdir and projected terrain layers.

This is the format generated by ArcGIS when gridascii command is used.

Rename tabs

• Basic -> Watershed
• Planar -> Network
• Relief -> Topography
• Hydrographic -> IUH
• PDF -> PDFn
• Regionalization -> Same… Network: Areas -> Area

IUH: Normalize chart
Stream network not visible on Mac OS X