Deslocamento nas camadas ao dar zoom in / out

Question

<\/HEAD>Olá pessoal,<\/P> <\/P> Estou usando o ArcGIS Desktop 10.2 e sempre tive problema com deslocamento em arquivos shape ao dar zoom in e out em um mapa náutico sobreposto.<\/P> Trabalho em exploração sísmica e, portanto, é muito importante que os polígonos dos blocos estejam referenciados corretamente a um mapa náutico.<\/P> <\/P> Quando carrego um polígono de bloco em Shape file, DXF, KML ou qualquer outro formato, ao dar zoom in e out, o mapa / arquivos shape se deslocam bastante, tornando muito difícil dizer o que está correto e o que não está.<\/P> <\/P> Além disso, quando carrego dois mapas náuticos separados lado a lado com exatamente a mesma escala e resolução, eles ainda não se alinham.<\/P> Alguém já enfrentou esse problema antes e qual é a solução para isso?<\/P> <\/P> Agradeço sua expertise.<\/P> <\/P> Atenciosamente,<\/P> Dhaval<\/P><\/BODY><\/HTML>

ttencer · Answer

Same here, arcmap and arcgis pro 3.0.1

UzmaKhan · Answer

I have same issue ,while zoom in,plotted data shifted from actual location.Can Anyone give the solution?

ChrisDonohue__GISP · Answer

What is likely going on is that some of your spatial data have incomplete spatial references.  While ArcMap has the capability to "project on the fly", it can only do so effectively if all the data have full spatial references.

For example, you mention that CAD data is being viewed.  It is fairly common for CAD files to have a coordinate system that matches the one commonly used for an area, but to lack a projection.  Because the coordinates are the same as other data, it loosely lines up with the other data that have the same coodinate system.  But because it lacks the projection, it will be off by a bit.

I'd suggest checking the spatial reference information for all your data layers and for ArcMap itself.  ArcMap needs to be checked as the Data Frame inherits the spatial information of the first data layer you loaded into it.

ArcMap

Right-click on the "Layers" heading (Data Frame) in the Table of Contents.

Right-click, then choose Properties

Then choose the Coordinates tab and see what spatial reference is set.

For Data layers loaded into ArcMap

Right-click on the layer in the Table of Contents

Choose Properties

Click on the Source tab

Scroll down to see the spatial reference information.

It can be OK for their to be different spatial reference information, as long as the layers have complete spatial reference information.  So if you have data in UTM and State Plane, that can be OK.

What are Map Projections?

ArcGIS Help (10.2, 10.2.1, and 10.2.2)

Specifying a Coordinate system

IArcGIS Help (10.2, 10.2.1, and 10.2.2)

Chris Donohue, GISP