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306 lines
7.9 KiB
Markdown
306 lines
7.9 KiB
Markdown
> **Warning**
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>
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> ## THIS IS AN AUTOGENERATED FILE. DO NOT EDIT.
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>
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> ## Please edit the corresponding file in [/packages/mermaid/src/docs/syntax/sankey.md](../../packages/mermaid/src/docs/syntax/sankey.md).
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# Sankey diagram (v10.3.0+)
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> A sankey diagram is a visualization used to depict a flow from one set of values to another.
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> **Warning**
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> This is an experimental diagram. Its syntax are very close to plain CSV, but it is to be extended in the nearest future.
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The things being connected are called nodes and the connections are called links.
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## Example
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This example taken from [observable](https://observablehq.com/@d3/sankey/2?collection=@d3/d3-sankey). It may be rendered a little bit differently, though, in terms of size and colors.
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```mermaid-example
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---
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config:
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sankey:
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showValues: false
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---
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sankey
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Agricultural 'waste',Bio-conversion,124.729
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Bio-conversion,Liquid,0.597
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Bio-conversion,Losses,26.862
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Bio-conversion,Solid,280.322
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Bio-conversion,Gas,81.144
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Biofuel imports,Liquid,35
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Biomass imports,Solid,35
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Coal imports,Coal,11.606
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Coal reserves,Coal,63.965
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Coal,Solid,75.571
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District heating,Industry,10.639
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District heating,Heating and cooling - commercial,22.505
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District heating,Heating and cooling - homes,46.184
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Electricity grid,Over generation / exports,104.453
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Electricity grid,Heating and cooling - homes,113.726
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Electricity grid,H2 conversion,27.14
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Electricity grid,Industry,342.165
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Electricity grid,Road transport,37.797
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Electricity grid,Agriculture,4.412
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Electricity grid,Heating and cooling - commercial,40.858
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Electricity grid,Losses,56.691
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Electricity grid,Rail transport,7.863
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Electricity grid,Lighting & appliances - commercial,90.008
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Electricity grid,Lighting & appliances - homes,93.494
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Gas imports,Ngas,40.719
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Gas reserves,Ngas,82.233
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Gas,Heating and cooling - commercial,0.129
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Gas,Losses,1.401
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Gas,Thermal generation,151.891
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Gas,Agriculture,2.096
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Gas,Industry,48.58
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Geothermal,Electricity grid,7.013
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H2 conversion,H2,20.897
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H2 conversion,Losses,6.242
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H2,Road transport,20.897
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Hydro,Electricity grid,6.995
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Liquid,Industry,121.066
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Liquid,International shipping,128.69
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Liquid,Road transport,135.835
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Liquid,Domestic aviation,14.458
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Liquid,International aviation,206.267
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Liquid,Agriculture,3.64
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Liquid,National navigation,33.218
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Liquid,Rail transport,4.413
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Marine algae,Bio-conversion,4.375
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Ngas,Gas,122.952
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Nuclear,Thermal generation,839.978
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Oil imports,Oil,504.287
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Oil reserves,Oil,107.703
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Oil,Liquid,611.99
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Other waste,Solid,56.587
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Other waste,Bio-conversion,77.81
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Pumped heat,Heating and cooling - homes,193.026
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Pumped heat,Heating and cooling - commercial,70.672
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Solar PV,Electricity grid,59.901
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Solar Thermal,Heating and cooling - homes,19.263
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Solar,Solar Thermal,19.263
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Solar,Solar PV,59.901
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Solid,Agriculture,0.882
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Solid,Thermal generation,400.12
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Solid,Industry,46.477
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Thermal generation,Electricity grid,525.531
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Thermal generation,Losses,787.129
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Thermal generation,District heating,79.329
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Tidal,Electricity grid,9.452
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UK land based bioenergy,Bio-conversion,182.01
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Wave,Electricity grid,19.013
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Wind,Electricity grid,289.366
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```
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```mermaid
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---
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config:
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sankey:
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showValues: false
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---
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sankey
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Agricultural 'waste',Bio-conversion,124.729
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Bio-conversion,Liquid,0.597
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Bio-conversion,Losses,26.862
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Bio-conversion,Solid,280.322
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Bio-conversion,Gas,81.144
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Biofuel imports,Liquid,35
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Biomass imports,Solid,35
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Coal imports,Coal,11.606
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Coal reserves,Coal,63.965
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Coal,Solid,75.571
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District heating,Industry,10.639
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District heating,Heating and cooling - commercial,22.505
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District heating,Heating and cooling - homes,46.184
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Electricity grid,Over generation / exports,104.453
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Electricity grid,Heating and cooling - homes,113.726
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Electricity grid,H2 conversion,27.14
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Electricity grid,Industry,342.165
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Electricity grid,Road transport,37.797
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Electricity grid,Agriculture,4.412
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Electricity grid,Heating and cooling - commercial,40.858
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Electricity grid,Losses,56.691
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Electricity grid,Rail transport,7.863
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Electricity grid,Lighting & appliances - commercial,90.008
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Electricity grid,Lighting & appliances - homes,93.494
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Gas imports,Ngas,40.719
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Gas reserves,Ngas,82.233
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Gas,Heating and cooling - commercial,0.129
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Gas,Losses,1.401
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Gas,Thermal generation,151.891
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Gas,Agriculture,2.096
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Gas,Industry,48.58
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Geothermal,Electricity grid,7.013
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H2 conversion,H2,20.897
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H2 conversion,Losses,6.242
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H2,Road transport,20.897
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Hydro,Electricity grid,6.995
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Liquid,Industry,121.066
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Liquid,International shipping,128.69
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Liquid,Road transport,135.835
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Liquid,Domestic aviation,14.458
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Liquid,International aviation,206.267
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Liquid,Agriculture,3.64
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Liquid,National navigation,33.218
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Liquid,Rail transport,4.413
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Marine algae,Bio-conversion,4.375
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Ngas,Gas,122.952
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Nuclear,Thermal generation,839.978
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Oil imports,Oil,504.287
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Oil reserves,Oil,107.703
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Oil,Liquid,611.99
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Other waste,Solid,56.587
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Other waste,Bio-conversion,77.81
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Pumped heat,Heating and cooling - homes,193.026
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Pumped heat,Heating and cooling - commercial,70.672
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Solar PV,Electricity grid,59.901
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Solar Thermal,Heating and cooling - homes,19.263
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Solar,Solar Thermal,19.263
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Solar,Solar PV,59.901
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Solid,Agriculture,0.882
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Solid,Thermal generation,400.12
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Solid,Industry,46.477
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Thermal generation,Electricity grid,525.531
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Thermal generation,Losses,787.129
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Thermal generation,District heating,79.329
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Tidal,Electricity grid,9.452
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UK land based bioenergy,Bio-conversion,182.01
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Wave,Electricity grid,19.013
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Wind,Electricity grid,289.366
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```
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## Syntax
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The idea behind syntax is that a user types `sankey` keyword first, then pastes raw CSV below and get the result.
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It implements CSV standard as [described here](https://www.ietf.org/rfc/rfc4180.txt) with subtle **differences**:
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- CSV must contain **3 columns only**
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- It is **allowed** to have **empty lines** without comma separators for visual purposes
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### Basic
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It is implied that 3 columns inside CSV should represent `source`, `target` and `value` accordingly:
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```mermaid-example
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sankey
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%% source,target,value
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Electricity grid,Over generation / exports,104.453
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Electricity grid,Heating and cooling - homes,113.726
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Electricity grid,H2 conversion,27.14
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```
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```mermaid
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sankey
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%% source,target,value
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Electricity grid,Over generation / exports,104.453
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Electricity grid,Heating and cooling - homes,113.726
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Electricity grid,H2 conversion,27.14
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```
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### Empty Lines
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CSV does not support empty lines without comma delimiters by default. But you can add them if needed:
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```mermaid-example
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sankey
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Bio-conversion,Losses,26.862
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Bio-conversion,Solid,280.322
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Bio-conversion,Gas,81.144
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```
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```mermaid
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sankey
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Bio-conversion,Losses,26.862
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Bio-conversion,Solid,280.322
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Bio-conversion,Gas,81.144
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```
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### Commas
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If you need to have a comma, wrap it in double quotes:
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```mermaid-example
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sankey
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Pumped heat,"Heating and cooling, homes",193.026
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Pumped heat,"Heating and cooling, commercial",70.672
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```
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```mermaid
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sankey
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Pumped heat,"Heating and cooling, homes",193.026
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Pumped heat,"Heating and cooling, commercial",70.672
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```
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### Double Quotes
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If you need to have double quote, put a pair of them inside quoted string:
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```mermaid-example
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sankey
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Pumped heat,"Heating and cooling, ""homes""",193.026
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Pumped heat,"Heating and cooling, ""commercial""",70.672
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```
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```mermaid
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sankey
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Pumped heat,"Heating and cooling, ""homes""",193.026
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Pumped heat,"Heating and cooling, ""commercial""",70.672
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```
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## Configuration
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You can customize link colors, node alignments and diagram dimensions.
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```html
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<script>
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const config = {
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startOnLoad: true,
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securityLevel: 'loose',
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sankey: {
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width: 800,
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height: 400,
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linkColor: 'source',
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nodeAlignment: 'left',
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},
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};
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mermaid.initialize(config);
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</script>
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```
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### Links Coloring
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You can adjust links' color by setting `linkColor` to one of those:
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- `source` - link will be of a source node color
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- `target` - link will be of a target node color
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- `gradient` - link color will be smoothly transient between source and target node colors
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- hex code of color, like `#a1a1a1`
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### Node Alignment
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Graph layout can be changed by setting `nodeAlignment` to:
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- `justify`
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- `center`
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- `left`
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- `right`
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<!--- cspell:ignore Ngas bioenergy biofuel --->
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