How to calculate the grid area in gis?

In gis, the grid area is generally calculated by the superposition of grids.

Because the grid calculation area can't be calculated in the attribute table with computational geometry tools like vector data. A simple method is to convert a raster into a vector and then calculate it.

The second method is to open the property sheet and get the number of pixels contained in each class in the count field, so the area = number of pixels * pixel area.

To solve your last problem, floating point can't open the property sheet. Depending on the precision that needs to be maintained, floating-point types can be converted to integer types. If you keep two digits after the decimal point, multiply the grid by 100 and then convert it into plastic. If you keep three digits, multiply it by 1000. After the calculation, you can turn the results back.

Geographic Information System (GIS) is sometimes called "Geographic Information System".

It is a specific and very important spatial information system. With the support of computer hardware and software system, it is a technical system that collects, stores, manages, calculates, analyzes, displays and describes the relevant geographical distribution data of the whole or part of the earth's surface space (including the atmosphere).

Location and geographic information are the core and foundation of LBS. A simple latitude and longitude coordinate will be recognized and understood by users only if it is placed in specific geographical information and represents a certain place, sign and orientation.

After users obtain location information through relevant technologies, they need to know their geographical environment, query and analyze environmental information, so as to provide information support and services for users' activities.