^-----Message d'origine----- ^De�: David Hilpipre ^Envoy�: mardi 19 octobre 2004 17:19 ^��: 'Jakob Lanstorp'; 'Wallace, Steve' ^Cc�: [EMAIL PROTECTED] ^Objet�: RE : MI-L VM interpolation problem ^ ^Hello again, ^ ^After some investigations, it seems that the layout of the point might ^explain the bizarre results in VM. I've tried the same interpolation 4 ^times on the same sets of point.Between each interpolation, I rotated the ^set of points of 90 deg. Guess what : the result are correct for the set of ^point after a rotation of 90 deg, 180 deg, 270 deg. Other than a bug, what ^could it be ? ^ ^Best regards ^ ^David HILPIPRE ^ ^^-----Message d'origine----- ^^De�: Jakob Lanstorp [mailto:[EMAIL PROTECTED] ^^Envoy�: mardi 19 octobre 2004 14:49 ^^��: David Hilpipre ^^Cc�: [EMAIL PROTECTED] ^^Objet�: RE: MI-L VM interpolation problem ^^ ^^Download the free VM 3.1 (upgrades a 3.0 to 3.1) from ^^http://www.mapinfo.com/verticalmapper. No need to to running version 3.0 ^^anymore. ^^I don't understand your problem, a VM grid is always rectangular, but you ^^can have some NULL values created when interpolating, so the grid won't ^^look like it rectangular. Depending on your display settings in the ^^interpolation dialog you will get a grid that is larger than area covered ^^by your points. Use a convex hull to trim your grid then. If you still ^have ^^a problem after upgrading to 3.1 or/and trimming send me the vector point ^^file and list your interpolation settings. And I will give it a try. ^^ ^^Mvh. | Regards ^^ ^^Jakob Lanstorp ^^Senior Consultant ^^Geographical Information & IT ^^ ^^COWI A/S ^^Odensevej 95 ^^DK-5260 Odense S ^^Tel +45 63 11 49 00 ^^Direct +45 63 11 48 62 ^^Fax +45 63 11 49 49 ^^Email [EMAIL PROTECTED] ^^http://www.cowi.dk ^^ ^^-----Message d'origine----- ^^De : David Hilpipre ^^Envoy� : mardi 19 octobre 2004 12:46 ^^� : '[EMAIL PROTECTED]' ^^Objet : VM interpolation problem ^^ ^^ ^^ ^^Hello, ^^ ^^ ^^ ^^I have a problem interpolating points data (I use Simple Natural ^^Neighbouring ; I might agree it's not the most suitable method in my case ^^but this is an other matter). To try to explain the problem simply, let's ^^say that my points are layed out as follow : ^^ ^^ ^^ ^^ x x x ^^ ^^ ^^ ^^ x x x ^^ ^^ ^^ ^^ x x x ^^ ^^ ^^ ^^ x x x ^^ ^^ ^^ ^^So what I should expext, as a result, is a rectangular grid. Well, this is ^^what I get : ^^ ^^ ^^ ^^_____________________ ^^ ^^I I ^^ ^^I x x x I ^^ ^^I I ^^ ^^ \ I ^^ ^^ \ I ^^ ^^ \x x x I ^^ ^^ / I ^^ ^^ / I ^^ ^^ / I ^^ ^^I x x x I ^^ ^^I I ^^ ^^I I ^^ ^^I x x x I ^^ ^^------------------------------------------------ ^^ ^^ ^^ ^^I just can't figure out why this shape ! I've even try to add an extra ^^point where the "hole" is and that point is simply ignored ! ^^ ^^Of course, my points are not layed out so geometrically in the case i'm ^^studying, but there are only 10 points (soil analyses), the dispersion is ^^quite homogeneous and there is no clustering effects. ^^ ^^ ^^ ^^This is roughly how my points are really layed out : ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^ X ^^ ^^ ^^ ^^ ^^ ^^As anyone an idea why this occurs ? I'm using VM 3.0 with Mapinfo 7.5. ^^ ^^Thanks for any help, hints or clues that anyone could give ^^ ^^ ^^ ^^David HILPIPRE ^^ ^^ARCADE Conseil ^^ ^^27000 EVREUX ^^ ^^FRANCE ^^ ^^ ^^ ^^ ^^ ^^
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