Thematic map is a kind of map based on ordinary map, which focuses on one or several natural elements or social and economic phenomena in the mapping area. The content of thematic map is mainly composed of two parts: thematic content and geographical basis. The former is the natural elements or social and economic phenomena and their related characteristics highlighted on the map. The latter is the content of ordinary map used to indicate the spatial location and geographical background of thematic map elements. The display feature of this type of map is that the content of the thematic map, which is the subject of the map, is represented in detail, while the content of its geographical basis varies according to the subject and selectively represents some of the relevant elements. In the field of maps, the development of thematic maps is the most active and the most rapid. The types of maps are more and more, the levels are endless, and the objects represented are very extensive, involving all areas of human society.
SuperMap has very powerful and rich thematic map production functions, provides simple operation, and can produce vivid and exquisite thematic maps according to various needs. In SuperMap, you can create Unique-values maps, Graudated Colors Map, Thematic Label Map, Statistical Thematic Map, Thematic maps such as Graduated Symbols Map, Dot Density Map, Custom Thematic Map, Grid Unique-values Map and Grid Graudated Colors Map. These thematic expressions are widely used in practice.
If you want to understand the basic concepts of thematic map, such as thematic variable, thematic sub-item, thematic map layer, thematic map display, and the application of various types of thematic maps, please refer to Thematic map .
Create a thematic map
You can create thematic maps by creating a new program or by providing Thematic Map Template.
Edit the thematic map
Support the editing of Unique-values Map, Graudated Colors Map and Custom Thematic Map, that is, the user can directly modify the Geometry in the produced thematic map. There is no need to edit the DataSource first and then make it into a thematic map again.
Thematic map Save as Dataset.
Save the thematic map as a CAD or Text Dataset. The purpose is to output the content of the thematic map to Dataset and save the style of the thematic map.
Unique-values Map
Unique-Values Map classifies objects with the same Property Field value in a layer, and sets a rendering style (such as color or symbol) for each class to express the difference between objects with different property values. Unique-values Map is helpful to emphasize the type difference of data, and it can not display quantitative information, so it is mostly used for maps with classification attributes, such as soil use type, Land Use Map, four-color map, etc.
Graudated Colors Map
The Graudated Colors Map divides the thematic value of the All Objects in the layer into a plurality of range segments according to a certain segmentation mode, sets a rendering style for each range segment, The style of the range segment is displayed. Graudated Colors Map shows quantitative characteristics of a region, such as region-specific sales figures, household income, or GDP, or shows rate information such as population density.
Thematic Label Map
The Thematic Label Map is mainly used to label and describe the map. You can use a field (or multiple fields) in Layer Properties to label objects such as points, lines, and surfaces. It is mostly used for text or numeric fields, such as marking place name, Road Name, river width, contour elevation value and other information.
Statistical Thematic Map
The Statistical Thematic Map reflects the size of its thematic value by making statistics for each Object Drawing in the layer. The Statistical Thematic Map can be based on multiple Thematic variables, reflecting multiple properties of the Map. With the help of Statistical Thematic Map, we can better analyze the distribution characteristics and development trends of natural and socio-economic phenomena, and form a horizontal and vertical comparison between the statistical map region itself and each region, which is mostly used in maps with relevant quantitative characteristics, such as showing the grain output, GDP, population and so on in different regions for many years.
Graduated Symbols Map
Similar to the Graudated Colors Map, the Graduated Symbols Map maps a certain attribute Select Fields of the Vector Layer to different levels, and each level is represented by a dot symbol with different size. The size of the symbol is proportional to the Property Field value. The larger the property value, the larger the point symbol on the thematic map, and vice versa. Graduated Symbols Map are mostly used on maps with quantitative characteristics, such as the classification of grain production, GDP, population and so on in different regions.
Dot Density Map
Similar to the Graudated Colors Map and the Graduated Symbols Map, the Dot Density Map maps an attribute Select Fields of a Vector Layer to different levels, and each level is represented by a dot symbol in the form of density. The density of point symbols distributed in the area is proportional to the Property Field value. The larger the property value is, the denser the distribution of point symbols on the thematic map is, and vice versa. Dot Density Map is mostly used on maps with quantitative characteristics, such as the classification of grain production, GDP, population and so on in different regions.
Custom Thematic Map
Create the Custom Thematic Map through the Custom Property field, and set the display style according to the numeric field value and the style of the corresponding ID number in the symbol library, so as to express the Data Information more freely.
Grid Unique-values Map
Grid Unique-Values Map classifies the pixels with the same pixel value in Raster Dataset into one category, sets a color for each category of pixels, and uses different colors to express the pixels with different pixel values.
Grid Graudated Colors Map
The Grid Graudated Colors Map divides the attribute values of pixels in the Raster Dataset into a plurality of range segments, the pixels with pixel values in the same range segment are displayed in the same color, and the pixels with pixel values in different range segments are displayed in different colors.