visualize-graph
This command creates a html visualization of a KGTK edge file
Usage¶
usage: kgtk visualize-graph [-h] [-i INPUT_FILE] [-o OUTPUT_FILE]
[--node-file NODE_FILE] [--direction DIRECTION]
[--show-edge-label]
[--edge-color-column EDGE_COLOR_COLUMN]
[--edge-color-numbers EDGE_COLOR_NUMBERS]
[--edge-color-hex]
[--edge-color-style EDGE_COLOR_STYLE]
[--edge-color-default EDGE_COLOR_DEFAULT]
[--edge-width-column EDGE_WIDTH_COLUMN]
[--edge-width-minimum EDGE_WIDTH_MINIMUM]
[--edge-width-maximum EDGE_WIDTH_MAXIMUM]
[--edge-width-default EDGE_WIDTH_DEFAULT]
[--edge-width-scale EDGE_WIDTH_SCALE]
[--node-color-column NODE_COLOR_COLUMN]
[--node-color-style NODE_COLOR_STYLE]
[--node-color-default NODE_COLOR_DEFAULT]
[--node-color-numbers NODE_COLOR_NUMBERS]
[--node-color-hex]
[--node-size-column NODE_SIZE_COLUMN]
[--node-size-minimum NODE_SIZE_MINIMUM]
[--node-size-maximum NODE_SIZE_MAXIMUM]
[--node-size-default NODE_SIZE_DEFAULT]
[--node-size-scale NODE_SIZE_SCALE]
[--node-file-id NODE_FILE_ID]
[--show-text-limit SHOW_TEXT_LIMIT]
[--node-border-color NODE_BORDER_COLOR]
[--tooltip-column TOOLTIP_COLUMN]
[--show-text SHOW_TEXT] [--show-blank-labels]
[-v [optional True|False]]
Convert edge file (optional node file) to html graph visualization file
optional arguments:
-h, --help show this help message and exit
-i INPUT_FILE, --input-file INPUT_FILE
The KGTK input file. (May be omitted or '-' for
stdin.)
-o OUTPUT_FILE, --output-file OUTPUT_FILE
The KGTK output file. (May be omitted or '-' for
stdout.)
--node-file NODE_FILE
Path of the node file.
--direction DIRECTION
The edge direction: arrow|particle|None. Default: None
--show-edge-label Add this option to show labels on edges. Default:
False
--edge-color-column EDGE_COLOR_COLUMN
Column for edge colors in the edge file. The values
can be numbers, hex codes or any strings
--edge-color-numbers EDGE_COLOR_NUMBERS
Indicate if the values in the --edge-color-column are
numbers and specify how to scale the numbers. The
valid choices are:linear|log|as-is. Default: None. The
numbers will be scaled linearly, logarithmically, left
as is respectively.
--edge-color-hex Add this option if the values in the --edge-color-
column are valid hexadecimal colors.Valid hexadecimal
colors start with # and are of 3 or 6 length (without
the #)
--edge-color-style EDGE_COLOR_STYLE
Pick one of the following CATEGORICAL styles:
d3.schemeCategory10, d3.schemeAccent, d3.schemeDark2,
d3.schemePaired, d3.schemePastel1, d3.schemePastel2,
d3.schemeSet1, d3.schemeSet2, d3.schemeSet3,
d3.schemeTableau10 OR one of the following GRADIENT
styles: d3.interpolateBrBG, d3.interpolatePRGn,
d3.interpolatePiYG, d3.interpolatePuOr,
d3.interpolateRdBu, d3.interpolateRdGy,
d3.interpolateRdYlBu, d3.interpolateRdYlGn,
d3.interpolateSpectral, d3.interpolateBlues,
d3.interpolateGreens, d3.interpolateOranges,
d3.interpolatePurples, d3.interpolateReds,
d3.interpolateGreys, d3.interpolateTurbo,
d3.interpolateViridis, d3.interpolateInferno,
d3.interpolateMagma, d3.interpolatePlasma,
d3.interpolateCividis, d3.interpolateWarm,
d3.interpolateCool, d3.interpolateCubehelixDefault,
d3.interpolateBuGn, d3.interpolateBuPu,
d3.interpolateGnBu, d3.interpolateOrRd,
d3.interpolatePuBuGn, d3.interpolatePuBu,
d3.interpolatePuRd, d3.interpolateRdPu,
d3.interpolateYlGnBu, d3.interpolateYlGn,
d3.interpolateYlOrBr, d3.interpolateYlOrRd,
d3.interpolateRainbow Default:
d3.interpolateRainbow.See
https://github.com/d3/d3-scale-chromatic for more
details.
--edge-color-default EDGE_COLOR_DEFAULT
Default color for edges. Default: '#000000'
--edge-width-column EDGE_WIDTH_COLUMN
Column for edge widths in the edge file. The values
should be numbers.
--edge-width-minimum EDGE_WIDTH_MINIMUM
Minimum edge width. Default: 1.0
--edge-width-maximum EDGE_WIDTH_MAXIMUM
Maximum edge width. Default: 5.0
--edge-width-default EDGE_WIDTH_DEFAULT
Default edge width. Default: 1.0
--edge-width-scale EDGE_WIDTH_SCALE
Edge width scale: linear|log. Default: None
--node-color-column NODE_COLOR_COLUMN
Column for node colors in the --node-file. The values
can be numbers, valid hex codes or any strings.
--node-color-style NODE_COLOR_STYLE
Pick one of the following CATEGORICAL styles:
d3.schemeCategory10, d3.schemeAccent, d3.schemeDark2,
d3.schemePaired, d3.schemePastel1, d3.schemePastel2,
d3.schemeSet1, d3.schemeSet2, d3.schemeSet3,
d3.schemeTableau10 OR one of the following GRADIENT
styles: d3.interpolateBrBG, d3.interpolatePRGn,
d3.interpolatePiYG, d3.interpolatePuOr,
d3.interpolateRdBu, d3.interpolateRdGy,
d3.interpolateRdYlBu, d3.interpolateRdYlGn,
d3.interpolateSpectral, d3.interpolateBlues,
d3.interpolateGreens, d3.interpolateOranges,
d3.interpolatePurples, d3.interpolateReds,
d3.interpolateGreys, d3.interpolateTurbo,
d3.interpolateViridis, d3.interpolateInferno,
d3.interpolateMagma, d3.interpolatePlasma,
d3.interpolateCividis, d3.interpolateWarm,
d3.interpolateCool, d3.interpolateCubehelixDefault,
d3.interpolateBuGn, d3.interpolateBuPu,
d3.interpolateGnBu, d3.interpolateOrRd,
d3.interpolatePuBuGn, d3.interpolatePuBu,
d3.interpolatePuRd, d3.interpolateRdPu,
d3.interpolateYlGnBu, d3.interpolateYlGn,
d3.interpolateYlOrBr, d3.interpolateYlOrRd,
d3.interpolateRainbow Default:
d3.interpolateRainbow.See
https://github.com/d3/d3-scale-chromatic for more
details.
--node-color-default NODE_COLOR_DEFAULT
Default node color. Default: '#000000'
--node-color-numbers NODE_COLOR_NUMBERS
Indicate if the values in the --node-color-column are
numbers and specify how to scale the numbers. The
valid choices are:linear|log|as-is. Default: None. The
numbers will be scaled linearly, logarithmically, left
as is respectively.
--node-color-hex Add this option if the values in the --node-color-
column are valid hexadecimal colors.Valid hexadecimal
colors start with # and are of 3 or 6 length (without
the #)
--node-size-column NODE_SIZE_COLUMN
Column for node sizes in the --node-file. Default:
None
--node-size-minimum NODE_SIZE_MINIMUM
Minimum node size. Default: 1.0
--node-size-maximum NODE_SIZE_MAXIMUM
Maximum node size. Default: 5.0
--node-size-default NODE_SIZE_DEFAULT
Default node size. Default: 2.0
--node-size-scale NODE_SIZE_SCALE
Node size scale: linear|log. Default: None
--node-file-id NODE_FILE_ID
ID column name in the --node-file. Default: 'id'
--show-text-limit SHOW_TEXT_LIMIT
When number of nodes is greater than --show-text-
limit, node labels will not be visible.Default: 500
--node-border-color NODE_BORDER_COLOR
Node border color. Default: None
--tooltip-column TOOLTIP_COLUMN
Column for node tooltips in the --node-file. Default:
None
--show-text SHOW_TEXT
Show node labels at the position relative to node:
center|above. Default: None. If the number of nodes in
the graph is greater than specified by --show-text-
limit option, which is 500 by default, then the text
will not be shown in the visualization.
--show-blank-labels if --show-text is specified, show the label of a Qnode
as emptry string, and not the Qnode, if the label is
an empty string.
-v [optional True|False], --verbose [optional True|False]
Print additional progress messages (default=False).
Node and Edge Color Style Options¶
The following color styles are available for node and edge colors, the options --node-color-style and --edge-color-style, respectively.
| Color Style | URL | Image | Type |
|---|---|---|---|
| d3.schemeCategory10 | https://github.com/d3/d3-scale-chromatic#d3.schemeCategory10 |  |
Categorical |
| d3.schemeAccent | https://github.com/d3/d3-scale-chromatic#d3.schemeAccent |  |
Categorical |
| d3.schemeDark2 | https://github.com/d3/d3-scale-chromatic#d3.schemeDark2 |  |
Categorical |
| d3.schemePaired | https://github.com/d3/d3-scale-chromatic#d3.schemePaired |  |
Categorical |
| d3.schemePastel1 | https://github.com/d3/d3-scale-chromatic#d3.schemePastel1 |  |
Categorical |
| d3.schemePastel2 | https://github.com/d3/d3-scale-chromatic#d3.schemePastel2 |  |
Categorical |
| d3.schemeSet1 | https://github.com/d3/d3-scale-chromatic#d3.schemeSet1 |  |
Categorical |
| d3.schemeSet2 | https://github.com/d3/d3-scale-chromatic#d3.schemeSet2 |  |
Categorical |
| d3.schemeSet3 | https://github.com/d3/d3-scale-chromatic#d3.schemeSet3 |  |
Categorical |
| d3.schemeTableau10 | https://github.com/d3/d3-scale-chromatic#d3.schemeTableau10 |  |
Categorical |
| d3.interpolateBrBG | https://github.com/d3/d3-scale-chromatic#d3.interpolateBrBG |  |
Gradient |
| d3.interpolatePRGn | https://github.com/d3/d3-scale-chromatic#d3.interpolatePRGn |  |
Gradient |
| d3.interpolatePiYG | https://github.com/d3/d3-scale-chromatic#d3.interpolatePiYG |  |
Gradient |
| d3.interpolatePuOr | https://github.com/d3/d3-scale-chromatic#d3.interpolatePuOr |  |
Gradient |
| d3.interpolateRdBu | https://github.com/d3/d3-scale-chromatic#d3.interpolateRdBu |  |
Gradient |
| d3.interpolateRdGy | https://github.com/d3/d3-scale-chromatic#d3.interpolateRdGy |  |
Gradient |
| d3.interpolateRdYlBu | https://github.com/d3/d3-scale-chromatic#d3.interpolateRdYlBu |  |
Gradient |
| d3.interpolateRdYlGn | https://github.com/d3/d3-scale-chromatic#d3.interpolateRdYlGn |  |
Gradient |
| d3.interpolateSpectral | https://github.com/d3/d3-scale-chromatic#d3.interpolateSpectral |  |
Gradient |
| d3.interpolateBlues | https://github.com/d3/d3-scale-chromatic#d3.interpolateBlues |  |
Gradient |
| d3.interpolateGreens | https://github.com/d3/d3-scale-chromatic#d3.interpolateGreens |  |
Gradient |
| d3.interpolateOranges | https://github.com/d3/d3-scale-chromatic#d3.interpolateOranges |  |
Gradient |
| d3.interpolatePurples | https://github.com/d3/d3-scale-chromatic#d3.interpolatePurples |  |
Gradient |
| d3.interpolateReds | https://github.com/d3/d3-scale-chromatic#d3.interpolateReds |  |
Gradient |
| d3.interpolateGreys | https://github.com/d3/d3-scale-chromatic#d3.interpolateGreys |  |
Gradient |
| d3.interpolateTurbo | https://github.com/d3/d3-scale-chromatic#d3.interpolateTurbo |  |
Gradient |
| d3.interpolateViridis | https://github.com/d3/d3-scale-chromatic#d3.interpolateViridis |  |
Gradient |
| d3.interpolateInferno | https://github.com/d3/d3-scale-chromatic#d3.interpolateInferno |  |
Gradient |
| d3.interpolateMagma | https://github.com/d3/d3-scale-chromatic#d3.interpolateMagma |  |
Gradient |
| d3.interpolatePlasma | https://github.com/d3/d3-scale-chromatic#d3.interpolatePlasma |  |
Gradient |
| d3.interpolateCividis | https://github.com/d3/d3-scale-chromatic#d3.interpolateCividis |  |
Gradient |
| d3.interpolateWarm | https://github.com/d3/d3-scale-chromatic#d3.interpolateWarm |  |
Gradient |
| d3.interpolateCool | https://github.com/d3/d3-scale-chromatic#d3.interpolateCool |  |
Gradient |
| d3.interpolateCubehelixDefault | https://github.com/d3/d3-scale-chromatic#d3.interpolateCubehelixDefault |  |
Gradient |
| d3.interpolateBuGn | https://github.com/d3/d3-scale-chromatic#d3.interpolateBuGn |  |
Gradient |
| d3.interpolateBuPu | https://github.com/d3/d3-scale-chromatic#d3.interpolateBuPu |  |
Gradient |
| d3.interpolateGnBu | https://github.com/d3/d3-scale-chromatic#d3.interpolateGnBu |  |
Gradient |
| d3.interpolateOrRd | https://github.com/d3/d3-scale-chromatic#d3.interpolateOrRd |  |
Gradient |
| d3.interpolatePuBuGn | https://github.com/d3/d3-scale-chromatic#d3.interpolatePuBuGn |  |
Gradient |
| d3.interpolatePuBu | https://github.com/d3/d3-scale-chromatic#d3.interpolatePuBu |  |
Gradient |
| d3.interpolatePuRd | https://github.com/d3/d3-scale-chromatic#d3.interpolatePuRd |  |
Gradient |
| d3.interpolateRdPu | https://github.com/d3/d3-scale-chromatic#d3.interpolateRdPu |  |
Gradient |
| d3.interpolateYlGnBu | https://github.com/d3/d3-scale-chromatic#d3.interpolateYlGnBu |  |
Gradient |
| d3.interpolateYlGn | https://github.com/d3/d3-scale-chromatic#d3.interpolateYlGn |  |
Gradient |
| d3.interpolateYlOrBr | https://github.com/d3/d3-scale-chromatic#d3.interpolateYlOrBr |  |
Gradient |
| d3.interpolateYlOrRd | https://github.com/d3/d3-scale-chromatic#d3.interpolateYlOrRd |  |
Gradient |
| d3.interpolateRainbow | https://github.com/d3/d3-scale-chromatic#d3.interpolateRainbow |  |
Gradient |
Edge and Node file Format¶
Edge File contains:
- node1: the subject column (source node)
- label: the predicate column (property name)
- node2: the object column (target node)
Optional:
- node1;label: the subject label (source node)
- label;label: the predicate label (property name)
- node2;label: the object label (target node)
Node File contains:
- id: id of the node. Default is 'id' col, but can be configured through --node-file-id option.
Optional:
- label: the node label
- x: x_coordinate of node
- y: y_coordinate of node
Both node file and edge file can contain additional columns. These columns can be used to provide more information as needed (see examples below)
Examples¶
kgtk cat -i examples/docs/visualize_force_graph_example2.tsv
Edge File
| node1 | label | node2 | weight | hex_color | ordinal |
|---|---|---|---|---|---|
| Q1 | "friend" | Q2 | 0.9 | #FF69B4 | 0 |
| Q2 | "friend" | Q3 | 0.3 | #FF69B4 | 1 |
| Q3 | "friend" | Q4 | "" | #FF69B4 | 2 |
| Q5 | "friend" | Q3 | "" | #FF69B4 | 3 |
| Q6 | "friend" | Q5 | "" | #FF69B4 | 4 |
| Q6 | "friend" | Q1 | "" | #FF69B4 | 5 |
| Q1 | "born" | Q7 | "" | #FFF68F | 6 |
| Q2 | "born" | Q7 | "" | #FFF68F | 7 |
| Q3 | "born" | Q7 | "" | #FFF68F | 8 |
| Q4 | "born" | Q8 | "" | #FFF68F | 9 |
| Q5 | "born" | Q8 | "" | #FFF68F | 10 |
| Q6 | "born" | Q8 | "" | #FFF68F | 11 |
| Q1 | "lives" | Q8 | "" | #32CD32 | 12 |
| Q2 | "lives" | Q7 | "" | #32CD32 | 13 |
| Q3 | "lives" | Q9 | "" | #32CD32 | 14 |
| Q4 | "lives" | Q8 | "" | #32CD32 | 15 |
| Q5 | "lives" | Q9 | "" | #32CD32 | 16 |
| Q6 | "lives" | Q8 | "" | #32CD32 | 17 |
kgtk cat -i examples/docs/visualize_force_graph_example2_node.tsv
Node File
| id | label | is_country | type | degree | type_missing | population | hex_color | ordinal |
|---|---|---|---|---|---|---|---|---|
| Q1 | 'Alice'@en | 0 | human | 40 | "" | "" | #00FFFF | 0 |
| Q2 | 'Susan'@en | 0 | human | 14 | "" | "" | #8A2BE2 | 1 |
| Q3 | 'John'@en | 0 | human | 4 | "" | "" | #FF4040 | 2 |
| Q4 | 'Claudia'@en | 0 | human | 32 | "" | "" | #7FFF00 | 3 |
| Q5 | 'Ulrich'@en | 0 | human | 422 | "" | "" | #FFB90F | 4 |
| Q6 | 'Fritz'@en | 0 | human | 4 | "" | "" | #C1FFC1 | 5 |
| Q7 | 'USA'@en | 1 | country | 50 | country | 300 | #FF1493 | 6 |
| Q8 | 'Germany'@en | 1 | country | 500 | country | 50 | #FFD700 | 7 |
| Q9 | 'Brazil'@en | 1 | country | 222 | country | 200 | #FF69B4 | 8 |
1. Default¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv -o default.html
2. Color by is_country column in the node file, use d3.schemeCategory10 to color nodes¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column is_country \
--node-color-style d3.schemeCategory10 \
--node-color-numbers as-is \
-o show_countries.html
is_country as column for assigning colors.
This command specifies that the values in the color column are numbers and should be left as is with the help of following option --node-color-numbers as-
is.
Finally, we specify that nodes should be colored using the d3.schemeCategory10 style.
3. Color by column degree, values as numbers, color scale: log, d3.schemePastel1 as color style¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column degree \
--node-color-numbers log \
--node-color-style d3.schemePastel1 \
-o show_degrees.html
This command specifies degree as column for assigning colors.
This command specifies that the values in the color column are numbers and should be scaled logarithmically with the help of following option --node-color-numbers log.
Finally, we specify that nodes should be colored using the d3.schemePastel1 style.
4. Handle missing values¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column type_missing \
--node-color-style d3.schemeSet3 \
-o show_types_missing.html
This command uses the column type_missing as assigning colors.
Notice here there are missing values.
All missing values will be assigned the default node color, using the style d3.schemeSet3 to color nodes.
5. Color by column hex_color, values as hexadecimal color codes¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column hex_color \
--node-color-hex \
-o show_color_hex.html
hex_color, which contains valid hex colors, for coloring nodes.
6. Show Edge Color¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--edge-color-column hex_color \
--edge-color-hex \
-o show_edge_color.html
hex_color, which contains valid hex colors, for assigning edge colors.
7. Show Node Size and Color¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-size-column population \
--node-size-minimum 2.0 \
--node-size-maximum 6.0 \
--node-size-default 4.0 \
--node-color-column hex_color \
--node-color-hex \
--node-size-scale log \
-o show_edge_node_color.html
hex_color, which contains valid hex colors.
Size of the nodes is proportional to the values in the column population, we scale the node size logarithmically
8. Edge Width¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--edge-width-column weight \
--edge-width-minimum 2.0 \
--edge-width-maximum 5.0 \
--edge-width-default 2.0 \
--edge-width-scale log \
--node-color-column degree \
--node-color-style d3.schemeDark2 \
--node-color-numbers linear \
-o node_size_log1.html
weight in edge file to interpolate edge width using the log scale.
Resulting edge width will be between 2.0 and 5.0 as specified by the options --edge-width-minimum and --edge-width-maximum.
Any edge with no value in weight columns will be assigned the default size: 2.0
Moreover, color the nodes using the numerical values in the column degree, scaling the values linearly, using the style d3.schemeDark2.
9. Show text above nodes¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column hex_color \
--node-color-hex \
--show-text above \
-o show_node_label.html
hex_color and shows labels above the nodes
10. Show labels on edges, color edges using hex colors¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--edge-color-column hex_color \
--edge-color-hex \
--show-edge-label \
-o show_edge_label.html
hex_color and shows labels on the edges as well.
11. Show labels and color nodes and edges¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column hex_color \
--node-color-hex \
--show-text above \
--show-edge-label \
--edge-color-hex \
--edge-color-column hex_color \
-o show_node_edge_label.html
Colors nodes by hexadecimal color codes in the column hex_color for both edges and nodes and show labels above nodes and on edges.
12. Show labels above nodes, blank labels for nodes with missing labels (instead of showing ids)¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column hex_color \
--node-color-hex \
--show-text above \
--show-blank-labels \
-o show_blank_labels.html
hex_color
13. Color by column ordinal, values as numbers, use d3.interpolateGreens interpolator¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column ordinal \
--node-color-numbers as-is \
--node-color-style d3.interpolateGreens \
-o scolor_nodes_interpolator_green.html
ordinal. We will map the colors to the scale d3.interpolateGreens.
The values in the column are sequential values, small values will be mapped to lighter shades of green while higher values will be mapped to darker shades.
14. Color by column ordinal, values as numbers, use d3.interpolateGreens interpolator, show labels on nodes¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--node-file examples/docs/visualize_force_graph_example2_node.tsv \
--node-color-column ordinal \
--node-color-numbers as-is \
--node-color-style d3.interpolateGreens \
--show-text above \
-o color_nodes_interpolator_green.html
ordinal. We will map the colors to the scale d3.interpolateGreens.
The values in the column are sequential values, small values will be mapped to lighter shades of green while higher values will be mapped to darker shades. Labels on the nodes match the shade of green for that node.
15. Color edges by column ordinal, values as numbers, use d3.interpolateReds interpolator¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--edge-color-column ordinal \
--edge-color-numbers as-is \
--edge-color-style d3.interpolateReds \
-o color_edges_interpolator_reds.html
ordinal. We will map the colors to the scale d3.interpolateReds.
The values in the column are sequential values, small values will be mapped to lighter shades of red while higher values will be mapped to darker shades.
16. Color edges by column label, values as strings, use d3.schemeDark2 style¶
kgtk visualize-graph -i examples/docs/visualize_force_graph_example2.tsv \
--edge-color-column label \
--edge-color-style d3.schemeDark2 \
-o color_edges_categorical_dark.html
This command maps strings in the column label to a categorical scale d3.schemeDark2
