Reclassify Field
Function Description
Reclassify Field can be segmented to New Field or update an existing field based on the specified field value.
Function entrance
- Property Sheet tab-> Edit group-> Regrade button.
- Data tab-> Data Processing group-> Vector-> Resize.
- Toolbox-> Data Processing-> Vector-> Resize.
Parameter Description
- Operation Field: The field used for segmentation.
- New Field: Sets the name of the New Field.
- Type: Only numeric fields are supported, and single precision or double precision can be selected.
- Segmentation Method: The following segmentation methods are provided.
- Equal Interval: according to the maximum and minimum values of the set segment value, perform equal-interval segmentation according to the number of segments set by the user. In an Equidistant Interval, each segment has an equal length.
- Square Root Interval: Equidistant interval is performed with the square root of the field value as the segment data. Firstly, take the square root of all values of the field value, and then carry out Equidistant Interval to obtain the segmentation points of the processed data, and then square the values of these segmentation points to obtain the segmentation points of the corresponding field value, so as to obtain the segmentation scheme of the field value.
- Logarithmic Interval: It is basically the same as the Square Root Interval method. The difference is that the Square Root method takes the square root of the field value, while the Logarithmic Interval method takes the logarithm of the field value. That is, an Equidistant Interval is applied to the base-10 logarithmic value of the field value. Firstly, perform Equidistant Interval on the logarithms of all field values to obtain the segmentation points of the processed data, and then take 10 as the base and the values of these segmentation points as the power of the exponent to obtain the values of the segmentation points of the corresponding field values, thereby obtaining the segmentation scheme.
- Square Segment: Perform Equidistant Interval with the square of the field value as the segment data. Firstly, take the square of all values of the field value, and then carry out Equidistant Interval to obtain the segmentation points of the processed data, and then carry out the extraction of the values of these segmentation points to obtain the segmentation points of the corresponding field value, so as to obtain the segmentation scheme of the field value.
- Segments: The number of segments of the Reclass Result.
- Numerical Precision: The precision of the operation.
- Min: The minimum value of the reassigned segment value.
- Max: The maximum value of the reassigned segment value.
Related topics
The property sheet is Copy and Paste.