MI-L Different area calculation in MapInfo and ArcView

Hi, I have problems with the different area calculation in MapInfo and ArcView. The data is an import file from ArcView. If I calculate the area of polygons in MapInfo with SphericalArea function it is more than 1 % smaller than the one in ArcView. The function CartesianArea in MapInfo

MI-L How to specify null value to the cells while importing a Grid

Hi List I have a grid which is in text file format and want to import it to MapInfo using Vertical Mapper. When I import the text file, the cells that do not have any value and specified with affect the neighbour cells. For example consider cells 1 and 2 are next to each other and the value

Re: MI-L : Cartographic Design Principles - SUM

As promised, here is a summary of the results I received on my query regarding Cartographic Design Principles: Books: Elements of Cartography (http://www.amazon.co.uk/exec/obidos/ASIN/0471555797/202-6902122-7514239) is a great book with explanations of all the basics of GIS and Cartography.

MI-L selecting and triming a rectangular from a tab file

Hi list, Does anyone know how I can trim some part of a tab file which is fitted in a rectangular or generally any shape? Imagine I have a tab file in MapInfo and want to do analysis on a small area of this tab file, so I need to trim this rectangular, the desired area, from this tab and save it

MI-L Securing a Database

I've got to do some research into how to secure the data in a large database so that it can only be used with its licensed application. The scenario is an application distributed with MapInfo tables (mostly map features with a unique Id and minimal other information) and an Access database

MI-L Errors in mapinfo polygons

Dear All I have a number of polygons that cannot be selected on the map, but they can be selected on the table. When I save as a copy they disappear. Also if I export to MIFs they have no graphic data but the attributes are still kept in the MID. This is obviously a bug in the file but is

MI-L points from intersecting lines

so i'm sure this is one of the most basic functions but it currently escapes me i have a table with like 700 lines (bus routes) and i want to create a point table wherever those lines intersect so we can analyze those locations. is it easier to do it with all these lines appended into a

MI-L Right trimming of a field

Dear all, I have a field containing names along with some numbers e.g. Avenue Road _1(426) Now, I want to discard everything after _ and update the same in the new field / right trim upto _. Pls give me a syntax that I can use in mapbasic window. Thanks Regards Shashibhushan The