EnglishFrenchSpanish

Ad


OnWorks favicon

d.rast.editgrass - Online in the Cloud

Run d.rast.editgrass in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command d.rast.editgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


d.rast.edit - Edits cell values in a raster map.

KEYWORDS


display, editing, raster

SYNOPSIS


d.rast.edit
d.rast.edit --help
d.rast.edit input=name output=name [aspect=name] [width=integer] [height=integer]
[size=integer] [rows=integer] [cols=integer] [--overwrite] [--help] [--verbose]
[--quiet] [--ui]

Flags:
--overwrite
Allow output files to overwrite existing files

--help
Print usage summary

--verbose
Verbose module output

--quiet
Quiet module output

--ui
Force launching GUI dialog

Parameters:
input=name [required]
Name of input raster map

output=name [required]
Name for output raster map

aspect=name
Name of input aspect raster map

width=integer
Width of display canvas
Default: 640

height=integer
Height of display canvas
Default: 480

size=integer
Minimum size of each cell
Default: 12

rows=integer
Maximum number of rows to load
Default: 100

cols=integer
Maximum number of columns to load
Default: 100

DESCRIPTION


The d.rast.edit program allows users to interactively edit cell category values in a
raster map layer displayed to the graphics monitor using a mouse cursor.

USAGE


Note: this help page refers to the old Tcl/Tk version of this program. Parts of it may be
out of date or wrong.

Overview window
An overview window shows the entire map with a box showing the current editing region. The
edit window shows the cells within the selected area. Click on a new spot on the overview
window to move the editing area. Moving the editing view can take a while.

Mouse and menus
Cell editing is done using a mouse cursor to choose menu selections and indicate areas on
the displayed raster map that are to be edited.

Selections available at the top of the edit window are Save and Exit.

As the mouse travels over the cells in the edit window you are shown the current
coordinates and current cell values under the cursor.

To change the value of a cell put the new value to use in the "New value" box at the
bottom left of the edit window under the coordinate information bar. A value of "*"
indicates a NULL value should be used.

Arrows
This function is available for users editing aspect maps. The d.rast.arrow program is
called, which draws arrows over the displayed cells to indicate the downslope direction of
the cell. You can set the aspect map to use on the command line. Aspect maps are
expected to be in regular "GRASS" format, as produced by r.slope.aspect; i.e. degrees
counter-clockwise from east.

NOTES


There is no "undo" command or way to exit edit mode without saving changes.

Any MASK in place will be respected when writing the new raster map layer, including any
edits to the MASKed areas.

Geographic Region Concerns
d.rast.edit reads the region definition for the raster map layer being edited from its
internal cell header file. The new, edited copy of the raster layer will be created with
the same resolution and region dimensions.

The primary bane of the d.rast.edit program involves large map layers with lots of rows
and columns) and/or slow computers, since the program must read and write raster map
layers row by row for the full size of the map layer as dictated by its region size and
resolution. (The current region settings of north, south, east, and west will not limit
the size of the edited copy of the map layer, since by use of the overview selection these
values may change several times during the editing session).

TODO


It would be nice to incorporate a scrollable version of d.legend (such that one could see
a label legend for files with many categories on a standard size sub-frame). It would be
even nicer to be able to select the category values from a graphical legend when editing
cell values (thereby saving a trip to the text frame to type in the new value).

Perhaps method(s) for multiple or mass cell edits would be useful. This could be done by
providing modes in which the user may:

1 edit a block of cells to a given value by drawing a box;

2 be able to choose a given value which is automatically used as the new value on
each cell chosen until a different value is desired.

There is no interrupt handling. This could leave files in .tmp or (rarely) result in
half-baked raster maps. The original file would survive unscathed by an interrupt at most
any point in execution. Beware of exiting the program by means other than using exit on
the Main Menu.

Use d.rast.editgrass online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Alt-F
    Alt-F
    Alt-F provides a free and open source
    alternative firmware for the DLINK
    DNS-320/320L/321/323/325/327L and
    DNR-322L. Alt-F has Samba and NFS;
    supports ext2/3/4...
    Download Alt-F
  • 2
    usm
    usm
    Usm is a unified slackware package
    manager that handles automatic
    dependency resolution. It unifies
    various package repositories including
    slackware, slacky, p...
    Download usm
  • 3
    Chart.js
    Chart.js
    Chart.js is a Javascript library that
    allows designers and developers to draw
    all kinds of charts using the HTML5
    canvas element. Chart js offers a great
    array ...
    Download Chart.js
  • 4
    iReport-Designer for JasperReports
    iReport-Designer for JasperReports
    NOTE: iReport/Jaspersoft Studio Support
    Announcement: As of version 5.5.0,
    Jaspersoft Studio will be the official
    design client for JasperReports. iReport
    will...
    Download iReport-Designer for JasperReports
  • 5
    PostInstallerF
    PostInstallerF
    PostInstallerF will install all the
    software that Fedora Linux and others
    doesn't include by default, after
    running Fedora for the first time. Its
    easy for...
    Download PostInstallerF
  • 6
    strace
    strace
    The strace project has been moved to
    https://strace.io. strace is a
    diagnostic, debugging and instructional
    userspace tracer for Linux. It is used
    to monitor a...
    Download strace
  • More »

Linux commands

Ad