There are different programs to display and manipulate maps, among them ArcGIS (Arcmap, Arcview), Manifold, CADcorp, AutoCAD, Microstation, at GIS level, before we saw some Take advantages...
In this case we will see how to connect manifold To image services, this is also a way to download an image to store it georeferenced.
In another post I speak As is done with ArcGis
1. Download bookstores
First of all, if we have not done so we must download the image server applications, from the Discharge zone Because they usually do not come with the license.
First we open the map or component, and we move to the area that interests us to synchronize (you can assign coordinates, but it is more practical in this way)
Once we are in the deployment that interests us, we select "file / link / image" and choose "manifold image servers"
- The window allows us to choose between Google maps / satellite options, Google maps / street, Virtual Earth / satellite, Virtual Earth maps / street and Yahoo maps / street. In our case we will choose Google maps / satellite image.
- If you have a paid license from Google Earth (Pro or Enterprise) You can choose a url for a better resolution, otherwise, we leave the one that appears by default.
- In the "scale" field, we choose the pixel size we want, which can range from 1 meter to 160 km. It is clear that the closer the deployment is, the better the resolution of the image will be.
- In order for the system to capture the extent we have, we click the refresh button.
- In case we want Manifold to cache the deployment we must check that option and the proxy button is to macar in case our intranet has it.
- Then click on the "ok" button
In the component area you can see the result.
2. Assigning projection to the image service
In the case of Google Earth, the download comes with a standard UTM (mercator) cylindrical projection with WGS84 datum. It is necessary to assign this projection, with right button «assign»
It is a bit of a hassle to "assign or change" projection, so the best thing to do is not to use change.
3. Displaying the IMS on the map
For this, we only drag it inside a "map", like any other component, which is a similarity of the arcmap layer, to see it behind the maps it is necessary to drag it on the lower tabs, behind the one we want, and assign transparency to the map in front.
4. Save the georeferenced image
For this only right click on the component, and export, can be stored in different formats, recommended .ecw so compact. To bring the image, it is done «import / image» and after it has been imported, it is always necessary to assign it a projection. Do not forget to assign the initial Google projection (standard, cylindrical mercator wgs84), now you can change projection to taste, for example UTM zone 16 north, wgs84
To do this: right mouse button on the object marked above in red and we assign it «Universal traverso mercator / zone 16N / Datum wgs84» which in this case is the zone of Honduras.
To connect ArcGis with Google / Virtual Earth Watch the video