Latest Contributions by NeilAyres

As Melita says, if both underlying GCS / datums are Leigon, then no transformation is necessary. The WKID for Ghana_Metre_Grid is 25000. EPSG has this definition, the units are metres (obviously). Why are you talking about mm? And, quite what is the definition of your starting coord sys. Also the older "Accra" system was in Gold Coast feet. ... View more

Exactly. Adding, moving, deleting data - No problem. The web map / app will reflect the changes. But changing the schema... No. You will have to re build the service from scratch. ... View more

"ESRI doesn't know what they are doing and we should find another GIS system to replace it."  Really, and I hear it at least once a month. Really, wow. It is very unwise to mess with the backend of a geodatabase. There is so much going on in there and its managed by sde (or whatever they call it these days). ... View more

Well, what are they going to do with the tin? A very large tin like that will be much slower to draw than the raster. ... View more

Why do you need this raster as a tin anyway? ... View more

But, once you have the service layer in ArcMap, just right click on it to "save as *.lyr file".... ... View more

Well, the normal way to do it is to create a GIS Server connection via ArcCatalog. Then in ArcMap you can navigate to that connection and add any service just like a normal layer / dataset. But as you are posting this in "Developers", I guess you want some sort of programmatic solution. ... View more

Kofi, I think you had better start again. NAD certainly isn't appropriate for your data (Ghana). What is the coordinate system of your modern reference data? Navigate to a feature class using ArcCatalog, right click on it to get the properties page, look at the coord tab. What does it say there. Please post a snap shot. The old e00 data, import it into a file geo db please. Do the same, what are the extents, what do the numbers look like (ie small numbers, maybe degrees, or larger numbers, probably some sort of projected metres. And please don't mess with units (km), until we have the basics sorted out. ... View more

Ah, the good old coverage format... No messing with topology rules, because it was all built in. ... View more

Love the story about the early surveyors tying ropes to pigs tails.... ... View more

What about must be covered by... Be careful with your tolerances and so forth. Do you really want any "adjacent" line to be snapped to the other line? And, make a copy of the data before you start. Validating topology changes the geometry permanently. Geodatabase topology rules and topology error fixes—Help | ArcGIS for Desktop ... View more

I think the only way to do this would be to write some python / arcpy code. Probably read it in as text (csv) is easier. Logic something like this : read in the file. For each line, split into a list object. Check that the number of elements is even (len(list) % 2) == 0. Just in case we have some funny lines with a missing X or Y. Then if len(list) == 2 -> create a point geometry. If len(list) > 2, check if the beginning and end pairs are the same -> create a polygon geometry. else create a polyline geometry. If you can upload some of your data here, I am sure someone will give you some code to try. ... View more

Well within an edit session, the only way would be to select then drag each feature to a new location. But why are you moving these features 10,000 metres? Is this not some sort of coordinate problem if they are so far away from where they are supposed to be? Could try rubber sheeting the features. But that is mainly designed for more near scale shifts. ... View more

Very nice Nasir. ... View more