Overview
Components
Download
How To Use
Frequently
Asked
Questions
MITOrthoTools
WebPage
|
|
Overview
The MITOrthoTools
for ArcView allows ArcView users to incorporate online orthophotos into
their views.
Components
To use the MITOrthoTools for
ArcView, three components are needed:
- The MITOrtho Extension
(MITOrtho.avx)
- The MITOrtho class
files (orthoPost.class and errorFrame.class)
- The
Java 1.1 Run Time Environment (JRE)
If
you're updating your MITOrthoTools
for ArcView, you only need to download the MITOrtho.avx
extension
and the class
files.
Download
Choose
one of the following download/setup options:
| Easy
setup |
- Required
if you don't have the JRE installed
|
| Custom
setup |
- Required
if you're installing the package on Unix.
- Recommended
if you have the Java JRE installed or you want to modify the default
location
of the components or the MITOrthoServers
used by the extension.
|
Download:
EASY SETUP
You
must download ALL
the components of the MITOrthoTools before
using the extension.
|
Download
|
Components
|
Notes
|
|
MITOrtho.avx
|
MITOrtho
Extension
|
- Make
sure the file is saved under a .avx extension.
- The
extension should be placed in one of ArcView's extension directories,
where
ArcView looks for all available extensions (The FAQ
has more
on
the location of these directories).
|
|
MITOrtho.zip
|
MITOrtho class
files
and
Java 1.1. JRE
|
- Unzip
the file and run setup.exe.
- This
setup procedure will create a directory c:\MITOrtho and transfer the
necessary
files to this directory.
|
Download:
CUSTOM SETUP
This
setup allows you to specify the location of the JRE and the class
files,
and to add, remove, or modify the set of MITOrthoServers accessed
by the ArcView extension. You specify these choices in an MITOrthoPC.ini
file (for PC's) or MITOrthoUNIX.ini
(for Unix).
|
Download
|
Components
|
Notes
|
| MITOrtho.avx |
MITOrtho
Extension
|
- Make
sure the file is saved under a .avx extension.
- The
extension should be placed in one of ArcView's extension directories,
where
ArcView looks for all available extensions (The FAQ
has more on the location of these directories).
|
| MITOrtho
class files |
MITOrtho
class
files
|
- This
zip file contains two class files. Unzip them to the same
directory.
|
| Java
1.1 JRE |
Java
1.1 JRE
|
- Download
the approapriate JRE for your platform (Unix, Windows).
|
| MITOrthoPC.ini
or
MITOrthoUNIX.ini |
ini
file
|
- Download
the appropriate file for your platform (PC/Windows or Unix). The ini
file
should be placed in the same directory as MITOrtho.avx.
- Modify
the ini file to reflect the location of the JRE, the class files,
and/or
the list of servers to be used by the extension.
|
How
To Use
If
the extension has been placed in the right location, it should appear
in
the extensions list. If not, review the download
instructions
or the FAQ.
Loading
the extension adds two buttons to the view button bar:
-
 Pick
Server:
Click on this button to choose an MITOrthoServer
as the source for your orthophotos. You can experiment using the
following
servers. For more MITOrthoServers,
refer to the MITOrtho
homepage.
-
 Get
Ortho: Click on this button to retrieve
the
orthophoto that covers the geographic extent of the current view.
To
overlay your vector files with a downloaded image, one of two
conditions
must hold:
- The
vector files are in the same projection as the image downloaded (See
table
below)
- The
vector files are in lat/lon (in which case you need to choose the image
projection in your view according to the MITOrthoServer images
projection). The following table lists the projections for the MITOrthoServers
mentioned above.
|
Image source
|
Projection
|
| ortho.mit.edu/nsdi |
Massachusetts State Plane meters, Mainland zone, NAD83 |
| coast.mit.edu |
Massachusetts State Plane meters, Mainland zone, NAD83 |
| ortho.edc.uri.edu |
Rhode Island State Plane (ft) |
| silo.mit.edu |
UTM (?) |
|
