How to Use Supermap destop \ editer to edit a map

From the night before yesterday to the evening of last night, I had been fighting for 20 or 30 consecutive hours because I wanted to help my teacher prepare several maritime maps, however, I can't think of it for the first time. Although I learned and used it for the first time, my learning progress was extremely fast because I had a teacher around me. The editing effect was also good. After a brief summary, I learned a lot. I will share with you: String 8.

1. Because the original data we use is in the Mapinfo format, we must first use Supermap destop \ editer to convert the format. I am surprised that Supermap destop \ editer is doing a very good job in GIS in this respect. Basically there is no loss in data conversion, and the final data expansion is not too large. Therefore, the first step is not very difficult, so we will transfer the Mapinfo data of hundreds of layers to Supermap destop \ editer.

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2. As required, I mainly want to beautify the graph in Supermap destop \ editer, and use Different The proportional and hierarchical display function controls the GPS of different layers. This work is much more complicated than I thought. It is an artistic job for graphic art. I will not talk about it here. The hierarchical display function makes me very convenient. You can zoom in or out to the scale you want to display, and then select the layer you want to edit, set the current scale to "maximum" or "minimum" display ratio, and set it to "maximum", that is, when the image range is enlarged, it can be displayed, but the image range cannot be displayed if it is reduced, and vice versa. In addition, at the beginning, I added all the layers (more than one hundred) to the current window without careful consideration, and then edited them. The result showed a mess. When editing multiple layers, the most efficient method is: a) First add the main area map layer (all area layers displayed at any scale), edit the layer; B) add other surface layers one by one, and set the display ratio. c) Add and edit line layers one by one, and set the display ratio. d) add a point editing layer and set the display ratio.

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When editing the line and point layers, you must note that the area to be enlarged is preferably the area with the most intensive information on the graph. This determines the hierarchical display of the entire graph. For example, I am working on the maritime map of the Yangtze River basin, where the most intensive information is concentrated along the Yangtze River and the Yangtze River Delta. At first, I did not pay attention to this problem. As a result, the point and line information in the local enlarged graph in the Yangtze River Delta is intensive, and the notes are crowded, seriously affecting the image performance, therefore, the selected area should be representative rather than random. String 3

3. There are also some tips when using Supermap destop \ editer. For example, when you change the font, you will find a very confusing phenomenon-You modified the font size, but what you see is that the height of the text has changed, but the width has not changed, finally, it is hard to find the xuanjicang. You only need to set the font width to 0 and then modify the font size, and keep the aspect ratio as 2 to 1 ...... String 2

In addition, there are two ways to add attribute fields as notes. One is to directly use the Topic map creation wizard-> text Topic map under the right-click; another method is to convert a dataset ----> data conversion -----> field to text, and select an appropriate data source in the middle. Compared with the previous method, the latter generates an independent text note layer for easier control. Finally, let's talk about its projection registration function. Because there is no actual projection data, I cannot test it, but the operation is not very complicated. for database management applications, supermap destop \ editer also provides SQL query and other functions.

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In general, Supermap destop \ editer gives me a strong sense of functionality, especially in the aspect of data format conversion, the efficiency and efficiency of map editing and display are both good, and more users are using Supermap + VB for secondary development. I hope you can share some of your learning experience with anyone who uses Supermap ...... String 4