3.5 at OSU
Global GRASS example dataset
Areal Report of Mapped Information:
Areas are calculated as a total for each category within the selected raster map(s). A report on "Counties" would give the total area for each county. A report on "Counties" against "Wetlands to 16 Categories" would show how much of each wetland type occurs in each county.
*
View information on
Raster Maps
available in GRASSLinks for Areal Calculations.
*
Refer to the
Help document
for further information.
Select a raster map for area calculation:
Ecoregions
Nations
Nations 2
Soil Class
Soil Texture
Vegetation Cover
Vegetation 1 degree res.
1
1w
2
50_m_buff
Buffer_CIAF
D_cell
Die_tolle_Pufferkarte
Dt
GRupo_Supervisor_2
Gobal
Jeffrey_Hoban
MAPA1
MI_MAPITA_NUEVO
Maghreb
Majorwoods
Map_Soil_Calcaric_Regosols
Metis_kleine_Buffekarte
NEWSOILS
SERGIO
SUELOS
aa
abc
angolasoil
antti
asd
bn,bn,
bonusgugelhupf
brazfor
buffer
buffer123456
buffereco
caif1
combine
congo_300
cucamonga
cucamongasegundo
dfhdg
ee
forests
gh
hhh
hot_farms
india1
india2
itbuff
k
kat2
kjhziu
ko-Welt-2
l
lif0
lj
majorwoods
map
metis_kleine_Bufferkarte
nam
neu
new
new1
no
oko
pippo
plus60_ant
que
qw
re
reklass
sadsad
test
testcomb
testeHumberto
tr
tsetey
w
wq
wwertwerwe
Select an optional second raster map to overlay with the first:
Ecoregions
Nations
Nations 2
Soil Class
Soil Texture
Vegetation Cover
Vegetation 1 degree res.
1
1w
2
50_m_buff
Buffer_CIAF
D_cell
Die_tolle_Pufferkarte
Dt
GRupo_Supervisor_2
Gobal
Jeffrey_Hoban
MAPA1
MI_MAPITA_NUEVO
Maghreb
Majorwoods
Map_Soil_Calcaric_Regosols
Metis_kleine_Buffekarte
NEWSOILS
SERGIO
SUELOS
aa
abc
angolasoil
antti
asd
bn,bn,
bonusgugelhupf
brazfor
buffer
buffer123456
buffereco
caif1
combine
congo_300
cucamonga
cucamongasegundo
dfhdg
ee
forests
gh
hhh
hot_farms
india1
india2
itbuff
k
kat2
kjhziu
ko-Welt-2
l
lif0
lj
majorwoods
map
metis_kleine_Bufferkarte
nam
neu
new
new1
no
oko
pippo
plus60_ant
que
qw
re
reklass
sadsad
test
testcomb
testeHumberto
tr
tsetey
w
wq
wwertwerwe
Select a region:
Set to area of selected maps
Global default
NOTE
: Your selected region setting is very important for Areal Reports. This is for two reasons: 1) the larger the region setting, the longer the process takes; and 2) the report analysis will be clipped to the selected GRASS region. For example, if you were to do "Counties" against "Wetlands" with a region setting of "Marin County", your area totals would be restricted to the predefined Marin County region box (which would include all of Marin and some of the surrounding counties).
Input a Raster Grid Resolution Setting between 10 and 1000:
Meters per Cell.
NOTE:
A coarse resolution will increase the speed of the reporting process but decrease the accuracy. But we suggest you only refine as needed. The finest resolution setting would be that of the original raster map(s). See the appropriate metadata record for this value.
Select the units to report in:
square miles
square meters
acres
hectares
square kilometers
or
(estimated run time 30 seconds)
Advanced options -
Select any of the following to perform real-time GIS operations.
Display
Buffer
Reclass
Combine
Area Calculations
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