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All
descriptions of importing procedures are based on intial testing of
this system. Users with extensive knowledge of GIS systems are welcome
to contact the DRC with suggestions
during this initial phase of development.
- A
GIS is a computer system for capturing, storing, checking, integrating,
manipulating, analysing and displaying data related to positions on
the Earth's surface. Typically, a Geographical Information System
(or Spatial Information System) is used for handling maps of one kind
or another. These might be represented as several different layers
where each layer holds data about a particular kind of feature. Each
feature is linked to a position on the graphical image of a map.
-
-
- Layers of data are organised
to be studied and to perform statistical analysis. Uses are primarily
government related; town planning, local authority and public utility
management, environmental, resource management, engineering, business,marketing,
and distribution. (Source of Text and Graphic:by http://www.geo.ed.ac.uk/agidexe/
)
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ArcInfo export format is
an uncompressed ASCII file which is a de facto standard today. Most
GIS programs can read this type of file. It contains the spatial topology
and linked tables with attribute information. A part of the census file
for Guelph is shown below as an example:
- EXP 0 GEO2:[GEOBASE91.LATLONG.CT91]CA550_CT91.E00
- ARC 2
- 1 -1 1 2 1 2 38
- -8.0276131E+01 4.3643623E+01-8.0276733E+01
4.3644089E+01
- -8.0281616E+01 4.3647766E+01-8.0292519E+01
4.3655270E+01
- -8.0292839E+01 4.3655499E+01-8.0294373E+01
4.3656525E+01
- -8.0295166E+01 4.3657124E+01-8.0310562E+01
4.3668373E+01
- -8.0323265E+01 4.3677536E+01-8.0335762E+01
4.3686817E+01
- -8.0335526E+01 4.3687027E+01-8.0331879E+01
4.3690258E+01
- -8.0326622E+01 4.3694923E+01-8.0315193E+01
4.3704861E+01
- .........
- CA550_CT91.BND XX 4
4 16 1
- XMIN 4-1 14-1 12 3 60-1
-1 -1-1 1-
- YMIN 4-1 54-1 12 3 60-1
-1 -1-1 2-
- XMAX 4-1 94-1 12 3 60-1
-1 -1-1 3-
- YMAX 4-1 134-1 12 3 60-1 -1 -1-1
4-
- -8.0373825E+01
4.3468117E+01-8.0085770E+01 4.3751911E+01
- CA550_CT91.PAT
XX 7 8 27 22
- AREA 4-1 14-1
12 3 60-1 -1 -1-1 1-
- PERIMETER 4-1
54-1 12 3 60-1 -1 -1-1 2-
- CA550_CT91# 4-1
94-1 5 0 50-1 -1 -1-1 3-
- CA550_CT91-ID
4-1 134-1 5 0 50-1 -1 -1-1 4-
- CA 3-1 174-1 3-1
20-1 -1 -1-1 5-
- CT_NAME 6-1 202-1
6-1 20-1 -1 -1-1 6-
- PROV 2-1 264-1
2-1 30-1 -1 -1-1 7-
- CA_CTNAME 9-1
170-1 9-1 20-1 -1 -1-1 -1-
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Type of Attribute
File ( Polygon Attribute Table) or AAT, number of attributes (8),
the number of attributes actually present(7) and the number of attribute
records(22)
The first column
is the field identifier e.g.
AREA, PERIMETER
Column 4 sometimes specify the field
width
The next column specifies the data
type of the field by a two - digit integer.
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- -4.2145599E-02 1.0379447E+00
1 0 0
- 2.1104667E-02 6.4333373E-01
2 2842550100.0035
- 9.5332535E-03 4.5012802E-01
3 2843550014.0035
- 2.8064002E-03 2.2712950E-01
4 2844550004.0035
- 6.1631063E-04 1.0554227E-01
5 2845550013.0235
- ..................
- This is part of the
CT E00 file of Guelph.
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To Import ArcExport
Files (.E00) into ArcInfo:
- Execute the EXE - file
to obtain the E00 file on a Dos/Windows machine
- Import this file into
ArcInfo using the command IMPORT. <<IMPORT input.E00 cover>>
- Note: If you work with
a UNIX system you need to convert the LF/CR signs into a Unix - format.
Therefore use the program DOS2UNIX at the DOS- level. Download it
from http://www.math.uiowa.edu/ftp/dos/
<<DOS2UNIX import.E00 output.E00>>
- Notice: You can do this
step also on the UNIX- system with the command on
- HP --- dos2ux
- IBM -- dosread
- SGI -- to_unix
- SUN -- dos2unix
or if the command is
not there, with the following combination:
cat dos_file | tr -d
"\015\032" > new_file
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To Import ArcExport
Files (.E00) into ArcView:
- Execute the EXE - file
to obtain the E00 file
- Import this file into
ArcView using the program IMPORT. ( it should be in the program group
Arcview) << IMPORT import.E00 cover_name>>
- Note: The IMPORT
command works only properly, if the E00 file and the import program
files are in the same directory. (ArcView Version 2.0)
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To Import ArcExport
Files (.E00) into MapInfo:
- Execute the EXE - file
to obtain the E00 file
- -this section is under
testing - more information to follow
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To Import ArcExport
Files (.E00) into Atlas GIS:
- Execute the EXE - file
to obtain the E00 file
- Convert this file into
ATLAS format (*.agf etc.) using the program IE (Import Export). Atlas
IE will handle double and single precision files. Based on the fact
that E00 files can contain more than one feature, for example arcs
and polygons, several imports may need to be done. IE can handle only
one feature type (point, line, region) at a time.Note: files can be
merged later in Atlas. IE creates a unique ID for each feature by
combining the base portion of the ArcInfo filename with an R (region),
L(line) or P(point) and a sequential number. The other internal attributes
are assigned after the following schemata: internal ID (covname# )
is placed in the _NAME field, the user-ID in the _NAME2 field. Area
and Length are calculated by Atlas. If desired other values can be
placed in _NAME etc. through a field translation file.
- Several options are
available for the import program:
| IE00 |
specifies that Import file is
ArcInfo Export file |
| TYPE sss |
sss is the type of feature(polygons,
arc,points) which is imported |
| COORD sss |
sss is the name of the coordinate
system - default is latitude/longitude |
| LAYER
sss |
sss is the name of the layer transmission
file - specifying the atlas layer name for the imported features |
| ATT sss |
sss is the name of the atlas attribute
file that is automatically created to contain external attributes |
| FIELD
sss |
sss is the name of the field translation
file that allows to direct ArcInfo fields to the desired Atlas
fields |
- The format of the command
is the following: <<ie import.E00 output_cover /att extra_tab
/field translation_file >>
- Field
Translation File (FTF): allows control over which ARC
attribute is imported to which Atlas internal or external attribute.
It is a simple ASCII file. It is possible to override the default
settings: specify field for _NAME, _NAME2; specify field characteristics
(decimal places etc. and ignored fields. Format of a FTF is the following:
| Source Field |
Target Field |
Type |
Size |
# of Dec. |
Long Description |
- source field - name
of E00 field
- target field - name
of atlas attribute field
- type of data in E00
: c - character, n - numeric, d - date, l - logical
- size - specify the number
of characters allowed for the field - by date 8, by logical 1, max
for numerical fields is 19, character field max is 254.
- # of Decimals - number
of spaces after the decimals by numerical data, otherwise place a
zero or asterisk
- Long description - a
more detailed description of the field.
- Layer
Transmission File(LTF): allows user to specify the name
of a created layer rather than a default name. It is a simple ASCII
file, which contains 2 columns. In the left column the ArcInfo layer
name and in the right column the Atlas layer name. If a LTF is not
specified, the IE program names the layer the same as in the ArcInfo
file.
- (Source: Atlas Import
/Export,1993)
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To Import ArcExport
Files (.E00) into IDRISI:
- Execute the EXE - file
to obtain the E00 file
- Direct ArcInfo to IDRISI
conversion for vector files only works with the UNGEN Procedure in
ArcInfo, thereby Polygon Data (DLG Format), Line Data with Attributes
and Line and Point Data without Attributes can be exported. As a result,
the E00 files would have to be imported into ArcInfo and then exported
with the UNGEN command.
- Import this file into
Idrisi using the program module import >software specific formats
> ARCIDRIS.
- ARCIDRIS requires that
you indicate whether the conversion will be from Arc/Info to IDRISI
for Windows or vice versa. If the conversion is going from Arc/Info
to IDRISI for Windows, specify the feature type of the UNGEN file,
either points (label) or lines (arc). The default is set to points.
Then input the names of the Arc/Info UNGEN file and the IDRISI for
Windows output vector file involved. Specify a reference system and
reference units. Click on the down arrows next to the input boxes
for a list to choose from or type your choices in manually. Finally,
specify a unit distance. The default settings are plane, meters, and
1 respectively.
- Note: For further description
about this procedure refer to the Idrisi Help manual.
- Note:An easier way may
be the following workaround: Import the files you need into Atlas
GIS and then export the files from there as BNA files.Then import
these into IDRISI using ATLIDRIS.
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To Import ArcExport
Files (.E00) into SPANS GIS:
- Execute the EXE - file
to obtain the E00 file
- Use the VECTOR INTERFACE
MODULE(VIM) to import ArcInfo export file into SPANS GIS vector (.VEH/.VEC)
and attribute files (.TBA). The program can use the following ArcInfo
features: ARC (arcs), PAL(areas),LAB(label points), TXT(text points),
CNT(centroids), AAT(arc attributes) and PAT(area attributes).
- Start the VIM and select
the E00 file. The following options are available:
| record length - end
of line sequence - |
Enter a value that is larger than
the maximum line length including EOL,CR or LF. In most cases
82 should be enough. |
| record length - fixed
length - |
each record has fixed length and
is not terminated by EOL. Enter record length. |
| arc attributes |
Highlight the attributes
to be imported, or Select All |
| areas attributes |
Highlight the attributes
to be imported, or Select All |
| new Spans vector file
|
Enter the name for
SPANS vector file (include arcs,areas and points |
| new arc attribute
file |
Enter the name for
Spans arc attribute table (AAT to TBA). Selected features will
be transformed. |
| new areas attribute
file |
Enter the name for
Spans area attribute table (PAT to TBL). Selected features will
be transformed. |
| new label point table
file |
Enter the name for
Spans label point table file (LAT to TBP). Selected features
will be transformed. |
| new text point table |
Enter the name for Spans text
point table file (TXT to TBT). Selected features will be transformed. |
| new centroid table file |
Enter the name for Spans centroid
table file (CNT to TBC). Selected features will be transformed. |
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5) Be sure that your
file is decompressed, before using the VIP. Use IMPORT / ArcExport
/ Decompress to decompress FULL(Format 1) and PARTIAL(Format 2) compressed
E00 files. The resulting file extension will be *.EXP. For Format
3 use IMPORT / ArcExport / Decompress (II).
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