| ldgrv | Create a line diagram for a vector in one subgraph |
| <graphic> | name of the graphic structure |
| [-inx <index>] | index of the subgraph |
| -f <field> | source field |
| -co <color> | color for the line diagram |
| [-sca <scaling>] | scaling function |
| [-min <min>] | minimum value |
| [-max <max>] | maximum value |
| ldgrv <graphic> -f <field> -rm | |
| Remove a line diagram from a field | |
This operation creates a subgraph and computes a line diagram from the values of a field. The indexes of data records are placed into the x axis, and their values are presented in the y axis. If the subgraph identified by <index> does not exist, first the operation creates a new one.
Example (ex7.22): Two fields crim and zn are described with line diagrams in the lower subgraph. Data field age is displayed in the upper subgraph.
NDA> load boston.dat NDA> mkgrp grp1 NDA> ldgrv grp1 -inx 0 -f boston.crim -co red NDA> ldgrv grp1 -inx 0 -f boston.zn -co green NDA> ldgrv grp1 -inx 1 -f boston.age -co blue NDA> show grp1
