| bar | Create or alter a bar |
| <graphic> | name of the graphic structure |
| [-inx <index>] | bar index |
| -f <field> | source data field |
| [-sca <scaling>] | scaling function, default=SOM |
| [-min <min>] | minimum value |
| [-max <max>] | maximum value |
| [-co <color>] | color for the bar |
| [-expr <bool-expr>] | boolean expression |
| bar <graphic> -f <field> -rm | Remove a bar |
This command creates bars to all subgraphs in a graphic structure. The <index> defines the place of this bar related to other specified bars. The scaling parameters are documented in a greater detail in section 7.5. The boolean expression can be used to show bars only for a part of the subgraphs. Only if the value of the expression is TRUE for a data record corresponding to a subgraph, a bar is created. More information about the evaluation of expressions can be found in section 4.3.1.
This operation creates the high level representation for a bar. In addition, the user can select the final appearance of the bars by selecting different modes for bar display (see commands en and dis in section 7.9).
Example (ex7.17): The following commands create two bars for displaying the average values of crim_avg and zn_avg in a SOM-oriented graphic structure.
... NDA> clstat -c cld1 -d boston -dout stadata -all ... NDA> mkgrp grp1 -s som NDA> setgdat grp1 -d stadata NDA> layer grp1 -l 3 NDA> bar grp1 -f stadata.crim_avg -co red NDA> bar grp1 -f stadata.zn_avg -co green NDA> en grp1 bar barflat NDA> dis grp1 barflat barlab saxis ...
Example (ex7.18): This example is similar to the previous one, but now the bars are displayed as vertical towers.
... NDA> mkgrp win1 -s s1 NDA> setgdat win1 -d sta NDA> setgcld win1 -c c1 NDA> layer win1 -l 4 NDA> axis win1 -ax z -sca abs -min -0.5 -max 1 -step 4 NDA> nplc win1 -ax z -f s1_W.b_w NDA> nsize win1 -v 0.5 NDA> topo win1 -on NDA> bar win1 -f s1_W.crim_w -co red -expr 's1_W.crim_w' > 0.01; NDA> bar win1 -f s1_W.zn_w -co green -expr 's1_W.zn_w' > 0.01; NDA> bar win1 -f s1_W.chas_w -co blue -expr 's1_W.chas_w' > 0.01; NDA> dis win1 barlab barflat saxis NDA> en win1 bar barvert NDA> viewp win1 -dz 150 -dy -15 -xy 42 -yz -70 ...
