If your map has a grid or a set of known ground points, you can use these as your control points. If not, you should choose between four and 10 distinctive locations, such as road intersections, and mark them on your map with a pencil.
Give each location a unique number, and write down its actual ground coordinates. Once you have identified at least four well-placed control points, place your map on the tablet and attach it with special residue-free putty; masking tape; or drafting tape, which looks like masking tape but leaves less residue when it's removed.
You do not have to align the map precisely on your tablet; ArcMap corrects any alignment problems when you register the map and displays such adjustments in the error report. After identifying your control points, you must register your paper map in real-world coordinates. This allows you to digitize features directly in geographic space. Registering your map involves recording the ground coordinates for the control points you identified.
These are recorded using the Digitizer tab of the Editing Options dialog box. After you have entered the ground coordinates, ArcMap displays an error report. The error report includes two error calculations: a point-by-point error and a root mean square RMS error.
The point-by-point error represents the distance deviation between the transformation of each input control point and the corresponding point in map coordinates. The RMS error is an average of those deviations.
ArcMap reports the point-by-point error in current map units. The RMS error is reported in both current map units and digitizer inches.
If the RMS error is too high, you can reregister the appropriate control points. Although I think I know many things in this very complete program I always discover something new. This time it is "Wintab Compatible Digitizer", I have no idea what this is for and would very much like to If anyone can help please.
Message 2 of 3. Message 3 of 3. They are referred to as 'Digitizers', replace a mouse. Skip to main content. Support and learning. To translate this article, select a language. View Original Translate. For less accurate data, the value can be as high as 0. Step 6: Set the correct projection. If you know what coordinate system projection your paper map is in, you should set the same projection for the layer into which you're digitizing. If you are digitizing features into an existing feature layer, you must ensure that your paper map and digital layer share the same coordinate system.
Step 7: Enable digitizing mode and begin digitizing. To digitize features, you need to enable digitizing mode to create features. Digitizing tablets generally operate in two modes: digitizing absolute mode and mouse relative mode. When you are in digitizing mode, you can only digitize features; you cannot choose buttons, menu commands, or tools from the ArcMap user interface because the screen pointer is locked to the drawing area. In mouse mode, however, there is no correlation between the position of the screen pointer and the digitizing tablet.
When digitizing, you can switch between digitizing mode and mouse mode using the Editing Options dialog box. This allows you to use the digitizer puck to digitize features as well as access user interface choices as a substitute for the mouse.
Also, you can use your mouse to choose interface elements at any time, whether your digitizer is in mouse mode or digitizing mode Wenzhong, You can digitize features on a paper map in two ways: point mode digitizing or stream mode digitizing streaming. You can switch back and forth between the two modes as you digitize by pressing F8. When you start a digitizing session, the default is point mode.
With point mode digitizing you convert a feature on a paper map by digitizing a series of precise points, or vertices. ArcMap connects the vertices to create a digital feature.
Point mode digitizing works the same way with a digitizer as with screen digitizing with the construction tools; the only difference is that with the digitizer you are converting a feature from a paper map using a digitizer puck instead of a mouse. When streaming, ArcMap automatically adds vertices at an interval as you move around the map. You might want to stream when creating a curved line, such as a river. Streaming, or stream mode digitizing, is commonly used with a digitizing tablet but can be used simply with a mouse.
To begin digitizing in stream mode, right-click and click Streaming when creating features. You can also press the F8 key to enter stream mode.
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