Affine similarity and projective.
Rubber sheet transformation in gis.
Click the spatial adjustment menu and click options.
See about spatial adjustment rubbersheeting for more details.
Historical maps rubber sheet transformation gis landscape visualization 1.
This exercise will show you how to rubber sheet data by using displacement links multiple displacement links and identity links.
Georeferencing topo sheets and scanned maps.
You can transform features that are visible and editable by selecting them or transform all features on specified layers.
Introduction historical maps are precious materials which show various spatial distribution of land use streets and so on of the historical importance at the time the maps were produced.
Two point displacement links define the origin and target location of the features you are transforming.
Autocad s land desktop allows a user to rubber sheet raster data.
By default arcmap supports three types of transformations.
The method parameter determines the interpolation method used to create the temporary tins in rubbersheeting.
Click either the natural neighbor or linear method and click ok.
The key difference between rubbersheeting and transformations however is that the distance features move depends on their proximity to a link and the length of that link.
Similar to transformations displacement links are used in rubbersheeting to determine where features are moved.
An affine transformation can differentially scale the data skew it rotate it and translate it.
Most gis projects require georeferencing some raster data.
Rubbersheeting is typically used to align two or more layers.
Esri s arcgis 8 3 has the capability of rubbersheeting vector data and arcmap 9 2 may also rubber sheet raster layers.
In the modify features pane transform includes linear and natural neighbor interpolation methods for rubber sheeting features.
Linear this method creates a quick tin surface but does not really take into account the neighborhood.
Many times these coordinates are obtained by doing field surveys collecting coordinates with a gps device for few easily identifiable features.
Click the adjustment methods drop down arrow and click rubbersheet.
Click the options button.
The affine transformation function is.
Rubber sheeting may improve the value of such sources and make them easier to compare to modern maps.
Esri s arcgis 8 3 has the capability of rubber sheeting vector data and arcmap 9 2 may also rubber sheet raster layers.
It is slightly faster and produces good results when you have many rubbersheet links spread uniformly over the data.
This process moves the features of a layer using a piecewise transformation that preserves straight lines.
Georeferencing is the process of assigning real world coordinates to each pixel of the raster.
X ax by c y dx ey f.
