[TZGISUG] Tanzania Polygon

[Mike Shand]

Hi Howard,

I found the same problem.
I did a vector spatial adjustment in ArcGIS and when it fitted well in 
the north it was off in the south by approx 50m and viceverca.
So clearly there is a problem with the shapefiles and I'm sure it is not 
simply or only a projection issue.

I also have issues with the border interpretation along the coastline 
and lake shores.  The water boundary shapefile is also out of alignment 
with the boundaries.

Regards,
Mike


On 16/04/2014 07:44, Howard L Frederick wrote:
> Hi Langen - thanks for that link!
>
> The archive has:
>
>   * International boundary (line)
>   * Districts (poly)
>   * Regions (poly)
>
> All are identified as Arc 1960 latlon.
>
> *Problem*: 'Districts' does not line up with the other two layers 
> (shifted NNW by ~ 250m); the other layers line up well with other 
> vector data I have, so I suspect there's a misidentification of datum 
> - however, changing it to Arc 1950 or WGS 84 doesn't seem to help.
>
> Anyone have ideas on how to fix it?
>
> Cheers - Howard
>
> On 15 April, 2014 at 18:16:10, Langen R. M. Mallya (cutlan at yahoo.com 
> <mailto:cutlan at yahoo.com>) wrote:
>
>> Hi,
>>
>> Try http://www.nbs.go.tz/takwimu/references/GIS_Maps.zip
>>
>>
>>
>> Yours,
>> Langen R. M. Mallya,
>> Chief Consultant,
>> (Geomatician, GIS Specialist, Programmer, Google Earth Trainer),
>> Member IST, TZGIS User Group, EIS, AAG & GISCorps Volunteer,
>> Cutlan Consultant,
>> P. O. Box 16967,
>> Arusha,
>> Tanzania.
>>
>>
>> Phone #: +255-78-444-5465
>> Fax #: +255-27-253-0246
>> e-mail: info at cutlan.co.tz
>> e-mail: cutlan at yahoo.com
>> http://www.cutlan.co.tz/
>>
>>
>>
>>
>> "In the end, we will remember not the words of our enemies, but the 
>> silence of our friends."
>> On Tuesday, April 15, 2014 3:36 PM, Andrew Wallace 
>> <andywallace3 at aol.com> wrote:
>> I am looking for an ESRI shape file of Tanzania's regions to view on 
>> QGIS. It needs to include the post 2012 regions (Katavi, Simiyu etc)
>> Any help would be greatly appreciated.
>>
>> Regards,
>>
>> Andrew
>>
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