2. A beginning look at the completed model used to find total acreage of corn, soybean, and wheat located
within Madison County, At least 120m away from forest, at or above 500 ft. of sea level, outside of flood
zones, at least 120m away from wetlands, outside of municipal boundaries, and at least 150m away from
any streams.
3. In order to find which agricultural areas were
only within Madison County a conditional
function was used to give pixels outside the
boundary a value of 0.
First, all categories of corn,
soybean, and wheat were
recoded within the model to
have similar value: 1.
4. This is the pixels of corn, wheat, and soybean located within the boundary of
Madison County.
5. The categories of pixels labeled as forest
were recoded into a similar value: 1. Then a
distance function was used to find all the
pixels located 120 Meters (4 pixels ) away
from any forest pixel.
A conditional function was
used to display 0 if a pixel
was less than 120m away
from a forest pixel, otherwise
it displayed a pixel that is
agricultural land within
Madison County.
6. The results show the pixels that are corn, soybean, wheat, located within Madison County,
and at least 120m away from a forested area.
7. The elevation of Illinois was modeled using a 30m x 30m
resolution Digital Elevation Model of the state.
A conditional function was used to define a pixel as agricultural land if the elevation was
equal to or greater than 500 feet. Elevations underneath this benchmark received a value
of 0.
8. Each pixel here represents corn, soybean, or wheat that is within Madison County, at least
120m away from forest, and at an elevation equal to or greater than500 ft.
9. Both 100 and 500 year flood
planes were recoded to a
value of 1 within the model in
order to run the next step of
the model.
Then the conditional function was used to
record a 0 for pixels located within flood
zones, or it displayed the pixel of corn,
soybean, and wheat otherwise.
10. All displayed pixels are corn, soybean, or wheat within Madison County, at least 120m away
from forests, greater than or equal too 500 ft elevation, and outside of any flood zone.
11. All wetlands were recoded to
have a value of 0, then a search
function was used to find all
pixels equal to, or within, 120m.
The conditional function used recorded a 0 for areas within
4 pixels (120m) from a wetland, and recorded a corn,
soybean, and wheat pixels left outside of that range.
12. Pixels that remain are corn, soybean, and wheat within Madison County, at least 120 m away from
forest and wetland, outside flood zones, and equal to or greater than 500ft above sea level.
13. Within the model, the values for
each individual municipalities’
border were recoded to 1, in order
for the model to exclude all the
boundaries at a single time.
The conditional function used records a 0 if the pixel
falls within the boundary of any municipality in
Monroe County, otherwise is displays the remaining
pixels of corn, soybean, and wheat.
14. Displayed pixels represent corn, soybean, or wheat within Madison County, at least 120m away
from both forests and wetland, outside of flood planes, and at or above 500 ft. elevation.
15. The streams were
recoded to have a
similar value: 1.
Then a Search
function was
performed to find
all pixels within
150m (5 pixels) of
any stream pixel.
The conditional function used recorded a 0 for areas
within 150m of a stream, and displayed the corn,
soybean, and wheat pixels for areas greater than 150m
away from any stream pixel.
16. Pixels remaining are corn, soybean, or wheat within Madison County, outside any municipality, at least 120 m away from
forests or wetlands, at least 150m away from streams, at or above 500 ft. elevation, and outside of a flood zone.
17. The remaining 105, 918 acres of corn, soybean, and wheat found within Madison County,
outside municipal boundaries, at least 120m away from forests and wetlands, at least 150m
away from any streams, outside of flood zones, and at or above 500 ft. of elevation.
