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When making long-distance parcel schematic diagrams (generally used for roads, etc.), limited to the size of the paper and the fixed drawing scale, it is necessary to divide the schematic diagram of a project parcel into several sections or tens of hundreds In order to clearly display the result map of the parcel within the established paper format, it is necessary to make a schematic diagram of the whole area of the parcel, and the connection table of each frame displayed in this map is the connection diagram . In general, splicing charts is actually splicing grids. It is easy to connect several grids, but using the fishnet tool and page-driven tool that comes with ArcGis, you can make a good connection between the connection chart and each plot frame. How to make a connection diagram requires knowing the following certain elements: 1. The size of the paper for making the schematic diagram of the parcel; 2. The size of the parcel (usually a road). As shown in Figure 1-1, it is the connection diagram made for this tutorial.
Picture 1-1:
(Click on the picture to get the method of making the base map)
1. Material preparation
1. Draw a long-distance road parcel.
2. Set the scale of the A4 paper format to measure the length and width of the connected chart grid.
The scale of the A4 paper format set this time is 25000, and the grid length and width are: 6920*4700. Note: The scale and grid length and width here are only preset for the experiment, and you can adjust it yourself according to the actual situation. The measurement tool is the measurement tool in the toolbar. When measuring, adjust the view to the layout view, and the scale is zoomed to the scale of the pre-drawn image. The grid length and width measured here can actually be calculated by the scale and the length and width of the A4 paper format.
3. After setting the above parameters, you can start making fishing nets and page drivers. I have written two chapters before to explain it:
Drawing of the whole process of ArcGis page-driven operation (1)
Framing mapping of the whole process of ArcGis page-driven operation (2)
Second, connect the chart production
Enter "fishnet" in the search box, and the fishnet tool window will pop up. Enter the corresponding parameters, as shown in Figure 2-1.
Figure 2-1:
1. Enter " fishing net " in the search box and click Search >>>Click Create Fishing Net under the column >>>Jump out the Create Fishing Net window. 2. Fill in the corresponding values in the parameters in the boxes one by one. Output feature class: select the path to be output and fill in the output name. Template scope: Select the Parcels layer. Pixel width: fill in the measured number (you can see whether the direction of the picture is filled with a large value or a small value.) Pixel height: fill in the measured number. Finally, click OK to generate the mesh fishnet.
As shown in Figure 2-2, it is an illustration of the generated fishnet.
Figure 2-2:
The generated fishnet grid is a line segment, and the tool " Convert Element to Surface " is needed to convert the fishnet into a mesh surface one by one.
As shown in Figure 2-3, open the "Element to Surface" tool window, input the fishnet element to be converted to surface, and obtain the surface mesh.
Figure 2-3:
1. In the search box, enter " Element to Surface " and click Search >>> Click Element to Surface under the column >>>The window of Element to Surface will pop up. 2. Only need to input the generated fishnet line segment in the input element, and then click OK.
As shown in Figure 2-4, through the selection tool, select the required grid containing the roads of the parcel and export it named "Connection Chart".
Figure 2-4:
1. Open the Select by Location tool by selecting Tools >> Select by Location >>. 2. Selection method: select elements from the following layers. Check Convert to grid layer of area features. Source layer: Choose the parcel layer (lines). Spatial selection method for target layer features: Intersect with source layer features. 3. The green-lit grid in the figure below is the selected grid >> click the corresponding layer in the content list, right-click to export and name it as a chart.
As shown in Figure 2-5, open the attribute table of the connected chart layer, add a "drive number" field and use the field calculator to calculate that it is equal to the field "FID+1" to obtain the sequentially increasing numbers from 1 to all grid numbers . Note: The driver serial number field here is used to drive the output control of each grid segment schematic diagram in the connection chart.
Figure 2-5:
At this point, the output of the connected chart and the grids of the connected chart as the driving page is also completed. For the specific driver drawing, you can refer to the driver page drawing (1) and (2) quoted in the text.
3. Results map display