Visualize your data in a heatmap calendar similar to the github activity calendar using this Obsidian plugin.

Useful for tracking progress towards various things such as exercise, finance, passion, vices, social, project progression etc.

It's intended to be used alongside DataviewJS, but could be used standalone or with other plugins as well, as all the plugin does, is add the function renderHeatmapCalendar() to the global namespace.

1. Annotate the data you want to track in your daily notes (see Dataview annotation documentation)
2. Create a DataviewJS block wherever you want the Heatmap Calendar to display.
3. Collect the data you want to display using DataviewJS
4. Pass the data into Heatmap Calendar using renderHeatmapCalendar()

\```dataviewjs
const calendarData = { 
	year: 2022,  // (optional) Defaults to current year
	colors: {    // (optional) Defaults to green
	  blue:        ["#8cb9ff","#69a3ff","#428bff","#1872ff","#0058e2"], // first entry is considered default if supplied
	  green:       ["#c6e48b","#7bc96f","#49af5d","#2e8840","#196127"],
	  red:         ["#ff9e82","#ff7b55","#ff4d1a","#e73400","#bd2a00"],
	  orange:      ["#ffa244","#fd7f00","#dd6f00","#bf6000","#9b4e00"],
	  pink:        ["#ff96cb","#ff70b8","#ff3a9d","#ee0077","#c30062"],
	  orangeToRed: ["#ffdf04","#ffbe04","#ff9a03","#ff6d02","#ff2c01"]
	},
	showCurrentDayBorder: true, // (optional) Defaults to true
	defaultEntryIntensity: 4, // (optional) Defaults to 4
	intensityScaleStart: 10, // (optional) Defaults to lowest value passe to entries.intensity
    intensityScaleEnd: 100, // (optional) Defaults to highest value passe to entries.intensity
	entries: [], // Populated in the DataviewJS loop below
}

//DataviewJS loop
for(let page of dv.pages('"daily notes"').where(p=>p.exercise)){ 

	calendarData.entries.push({
		date: page.file.name, // (required) Format YYYY-MM-DD
		intensity: page.exercise, // (required) the data you want to track, will map color intensities automatically
		content: "🏋️", // (optional) Add text to the date cell
		color: "orange", // (optional) Reference from *calendarData.colors*. If no color is supplied; colors[0] is used
	})

}

/**
* param1  HTMLElement   DOM reference for calendar rendering
* param2  CalendarData  Calendar data object from above
*/
renderHeatmapCalendar(this.container, calendarData)
```

You don't need to supply any colors, the calendar uses green by default, just like Github.
If you do supply colors to calendarData.colors, the first index will be considered the new default color.

Add a custom color to each entry by specifying the name you gave the color in calendarData.colors. You can even use multiple colors in the same calendar, just use different colors for different entries.

The color schemes used in the examples were created at leonardocolor.io.

The "Intensity" means which intensity of color to use, for example from light-green to dark-green, and they will be distributed between the highest and lowest number you pass to "intensity".
If the number range 0-100 is used, numbers between 1-20 would map to the lightest color, 40-60 would map to mid intensity color, and 80-100 would map to max intensity. You can add more intensities in order to increase color resolution; simply supply more colors to calendarData.colors.yourcolor

Dataview's time variables are supported without any conversion, as they return milliseconds by default.
[time:: 1 hours, 35 minutes] => intensity: page.time

Use Obsidian CSS snippets for custom styling.
See snippet examples.

• See the EXAMPLE VAULT if you want to test out the examples.
• Week starts on Monday, not configurable yet
• Date format is YYYY-MM-DD, if your daily note filename is something else, you can use JS to change it in the loop

npm run dev - will start TS to JS transpiler and automatically copy the JS/CSS/manifest files to the example vault whenever they are modified.
Installing https://github.com/pjeby/hot-reload is recommended to avoid restarting obsidian after every change, but remember to add a .hot-reload file to EXAMPLE_VAULT/.obsidian/plugins/heatmap-calendar/

Version [0.5.0] - 2022-06-30

• Feature: Add darkmode support

Version [0.4.0] - 2022-06-25

• Feature: Add hover preview feature courtesy of @arsenty from issue #12.
  to enable - add content: await dv.span([](${page.file.name})) to entries, and enable Settings -> Core Plugins -> Page Preview.
  Optionally install plugin Metatable to display metadata/frontmatter in the preview window aswell.
  See examples for more details

Version [0.3.0] - 2022-06-25

• Feature: Can add more intensities in order to increase color resolution. simply supply more colors to calendarData.colors.yourcolor
• Feature: Can set custom range on the intensity scaling using intensityScaleStart and intensityScaleEnd
• Bugfix: Entries from other years would show up in the calendar

Version [0.2.0] - 2022-06-05

• Feature: Add border around todays box to indicate what day it is. Can be removed by setting showCurrentDayBorder to false
• Feature: Add better development solution/workflow by using automated file copying instead of symlinks

Version [0.1.1] - 2022-03-18

• Bugfix: fix major date problem where year would render with incorrect number of days for different timezones issue#4.
• Bugfix: fix problem with certain entries not showing up in the correct month
• Bugfix: fix grid cells not scaling correctly with browser width, especially content in grid cells

Version [0.1.0] - 2022-02-23

• initial release