An easy way to calculate the area of overlapping polygons from two MapInfo
tables is to use the "set target" function.
Select all from table1
Click on OBJECT>SET TARGET
Select all from table2
Click on OBJECT>ERASE OUTSIDE
The area remaining in table2 is the total area of overlap
** make sure you
If you are proficient with programming, it would be a simple MapBasic
program to edit each .tab file with the revised style information. Or
perhaps you know someone who could write the code for you. It would only be
a few lines.
- Scott MacComb, Ernst & Young
- Original Message -
From
Frederic,
we have got a GDF3 - Reader for MapInfo to sell. We convert all GDF
features in MapInfo Tab Files, including all attributes and the
relationships.
Please look at our web site or cantact me if you want more information.
Regards,
Markus
planfax wrote:
>
> Hi everybody...
>
> I woul
"Swayze, Natalie: WPG" wrote:
> >I'm working with a series of 1:50K maps, each of which has ~7 layers(
> hydrology, roads etc.)I need to combine the layers from all the maps to
> create 7 layers for the entire coverage area.
This is what seamless layers are for. Check that out.
One advantage is
Sorry this is just a test to see if I am receiving my mail from MapInfo-L,
since our mailgate crashed I have had no mail from MapInfo-l for nearly a
week.
Marie
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Thanks to all for the suggestions so far. Here's some more information from
further experimenting.
The problem seems to be restricted to objects that cross or touch the 180
degree line in any way. If you click on the triangles and drag them one
pixel away from the 180degree line and the pole, the
Stephen,
Apples, oranges, and peaches.
The ellipsoidal Transverse Mercator was first utilized for
a real project by Carl Freiderich Gauss in the early 19th
century. Kruger was one fellow (in Prussia) that re-cast
his equations in the late 1800's to early 1900's so that it
could be computed
Mark,
I note that you have used the Lambert Azimuthal Equal-Area (South Pole)
projection.
If you calculate the area using the cartesian option you get an exact match
on area (2,725,144.9 sq km)
Given that your triangle is 3,300 km by 1,700 km and originating at the
south pole and heading due no
I asked this question a while ago and the only alternative despite having
ArcInfo to convert the files in E00 format was to use ArcView to read them
and convert to shapefiles.
I haven't tried the Arcview path, and I'm not sure if it works.
cheers.
Franck Martin
Database Development Officer
SOPA
Dawn,
For MapInfo Professional, the custom colors are stored in a file called mapinfow.clr
located in the Windows directory. To revert back to the default color pallete,
just delete this file.
Regards,
Sue.
adding Susan Port
value Technical Suppor
Good morning all,
I ran Mark Ogilvie's mbx demonstrating problems with the area calculations
in MI. As a test, I constructed some smaller triangles by overlay at the
top vertex, and found that these also had large differences in areas.
As a second test, I constructed a small circle (radius 4.565
Hello Mark,
> I have been making comparisons of the area of various objects, and have
> found MapInfo's area calculating function to be seriously broken, at least
> in some projections (Polar Azimuthal projections).
MapInfo Pro's area calculation is independent of the current map projection. It
Can anybody tell me which file is modified once you tick Save Colours in the
Define Custom Colours box?
Is it possible to use this file occasionally (for jobs requiring the new
colours) and then swap back to the original set afterwards?
TIA
Dawn
Hi,
I got a question.
Iam running a quad 200 Mhz (4*200Mhz) compaq server with 1 Go of ram . The
main purpose of the machine is to serve a web application (find nearest dealer)
for hundred of peoples using MapXtreme.
So Most applications are not
multi-threaded, and will not direct
Hi Natalie
The following tools proved very useful for both importing and then
combining 1:250K Vector data from a large number of same structure tiles
to one file.
Append2 is the one your after if you have already done the import-Run it
for each layer.
All appear at the mapinfo-l file archive.
E.
Natalie,
There is a MapBasic program which is part of Kevin Mahoney utilities called
comb_tab.mbx that combines tables together. To get it, go to
http://www.directionsmag.com/mapinfo-l/IndexFiles.htm
and download kgmv41.zip.
Regards,
Sue.
adding Susa
I have been making comparisons of the area of various objects, and have
found MapInfo's area calculating function to be seriously broken, at least
in some projections (Polar Azimuthal projections).
Attached is the MB code and an MBX (both are tiny) which demonstrates the
problem. To summarise wha
Second Call: I did not get any responses to the first post. Even
if you don't have an answer for me, if (one or two of you :)
somebody could verify my messages are getting out I'd
appreciate it. Thanks.
Hi,
What is the best method of batch editing large numbers
of identical tables?
I have a c
Second Call: I did not get any responses to the first post. Even
if you don't have an answer for me, if (one or two of you :)
somebody could verify my messages are getting out I'd
appreciate it. Thanks.
Hi,
What is the best method of batch editing large numbers
of identical tables?
I have a c
You might check the US Census Bureau: http://www.census.gov/geo/www/cob/ for
free data.
Regards,
Miguel Iturralde[EMAIL PROTECTED]
- Original Message -
From:
Mike C Kallas
To: [EMAIL PROTECTED]
Sent: Tuesday, 03 August, 1999 01:30
PM
Subject: MI Looking for Count
>I think this topic was posted recently, however
>I cannot recall. Anyone know where I could get
>United States county boundaries. (Possibly free?)
They are included on the MI Ver 5.5 CD. From the main install screen, select
"Install Products" This gives you the option of installing MI Pro
You can use Save Copy as... and on the dialog select a new projection to
answer the second part of your question first!
However if you are doing this to improve accuracy be aware that the
accuracy is already lost in your first table - if no bounding rectangle
being used!!
The first part could be
Hi Chris
Is this only happening on your development machine, or on end user
machines as well?
Bob
In message <[EMAIL PROTECTED]>, Chris Martin writes
>This maybe a little off-topic but I'd appreciate some help nevertheless...
>
>In the last few days a rather annoying fault has appeared wit
Hi Phil
I'm not familiar with your projection so I may be way out here but
MapInfo chops the Minimum bounding rectangle for your Map projection
into 4000 million pieces ( a LONG value )( ie +- 2GB). If you do not set
a MBR then the smallest unit that you can use can be quite large.
When yo
Greetings All: I'm trying to track when the zipcode boundary file, "USZIPBDY.TAB",
was current, and its' original source. It was supplied with the other data in
MapInfoPro.
I believe someone on the list commented once that they thought the data in the file
was from 93 or 94. I don't know wh
Hello all:
Does anyone know if it is possible do the following?
Click at a start location on a polyline, give a distance and have the system generate
a point at that location along the line. The line may have to pass over intersections
with other lines.
Basically this would be used to find o
I think this topic was posted recently, however I cannot recall.
Anyone know where I could get United States county boundaries.
(Possibly free?)
Thanks
-
Mike Kallas
Sprint Corporation
Broadband Local Networks
Site Application Planning
Network Analyst II
Office: 913.906.7704
Hello all,
I have a couple quick questions which hopefully have a simple solutions:
>I'm working with a series of 1:50K maps, each of which has ~7 layers(
hydrology, roads etc.)I need to combine the layers from all the maps to
create 7 layers for the entire coverage area. Is there an SQL query I
Hi,
I created points from a table. The coordinate system is State Plane NAD83
(U.S. Survey feet). I know distances from these points to other features I
want to draw in. As I draw these features, I'm noticing some weird
behavior. I'll draw a line, double-click on it, then set its length to 17
When trying to translate a *.shp file, UT crashes when the Projection button
is pushed. Only resurrection on this NT system is to End Task. Once while
doing so I found an error message window giving something like "out of disk
space for temporary files". Given that there is actually plenty of d
Dear List,
I am trying to import a MIF and I keep receiving the following error,
"(c:\working directory\filename.mif:6140) Syntax Error". The MIF is
the result of translating some Tiger/Line files. Other MIF derived in
the same fashion import without any problems. I was just wondering if
any
Hi everybody...
I would like to work with Tele Atlas' datas (european society producting
GIS datas) but these datas are in .GDF format (Geographic Data Format I
suppose...).
A question for readers who have already worked with Tele Atlas' datas
and the others... :
Does someone know how to conver
Dear All,
I am looking for the best way to transfer Arc/Info vector coverages to MI.
Are there alternatives to the usage of the e00-format and the ArcLink tool? If
so, what are the advantages of those possibilities?
Thanks in advance,
Thorsten Schad.
-
I think this problem was solved with MapX 3.5.2 - at least this version
solved an identical problem I had with MapX 3.5.1 and VB6.
John Brosowsky
>This maybe a little off-topic but I'd appreciate some help nevertheless...
>
>In the last few days a rather annoying fault has appeared within my
This maybe a little off-topic but I'd appreciate some help nevertheless...
In the last few days a rather annoying fault has appeared within my MapX application;
when I close the EXE application or when I end the program running through the VB
development environment, I get an Invalid Page Fault
I have a few questions concerning MapInfo functionality that I hope someone
out there can help with.
Firstly, I would like to know if there is some way for MI to utilise fonts
that contain semantic inflections, such is found in scandanavian text. I
have tried copying in text from "Character
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