This is an Obsidian Templater script that genrates a mindmap drawing from a tabulated outline, similar to the sample outline attached.

MindmapInput.md

• Test 1
  • Test 1.1
• Test 2
  • Test 2.1
  • Test 2.2
    • Test 2.2.1
    • Test 2.2.2
    • Test 2.2.3
      • Test 2.2.3.1
• Test 3
  • Test 3.1

ObsidianExcalidrawMindmapWithTemplater.js

<%*
const IDX = Object.freeze({"depth":0, "text":1, "parent":2, "size":3, "children": 4, "objectId":5});

//check if an editor is the active view
const editor = this.app.workspace.activeLeaf?.view?.editor;
if(!editor) return;

//initialize the tree with the title of the document as the first element
let tree = [[0,this.app.workspace.activeLeaf?.view?.getDisplayText(),-1,0,[],0]];
const linecount = editor.lineCount();

//helper function, use regex to calculate indentation depth, and to get line text
function getLineProps (i) {
  props = editor.getLine(i).match(/^(\t*)-\s+(.*)/);
  return [props[1].length+1, props[2]];
}

//a vector that will hold last valid parent for each depth
let parents = [0];

//load outline into tree
for(i=0;i<linecount;i++) {
  [depth,text] = getLineProps(i);
  if(depth>parents.length) parents.push(i+1);
  else parents[depth] = i+1;
  tree.push([depth,text,parents[depth-1],1,[]]);
  tree[parents[depth-1]][IDX.children].push(i+1);
}

//recursive function to crawl the tree and identify height aka. size of each node
function crawlTree(i) {
  if(i>linecount) return 0;
  size = 0;
  if((i+1<=linecount && tree[i+1][IDX.depth] <= tree[i][IDX.depth])|| i == linecount) { //I am a leaf
    tree[i][IDX.size] = 1; 
    return 1; 
  }
  tree[i][IDX.children].forEach((node)=>{ 
    size += crawlTree(node);
  });
  tree[i][IDX.size] = size; 
  return size;   
}

crawlTree(0);

//Build the mindmap in Excalidraw
const width = 300;
const height = 100;
const ea = ExcalidrawAutomate;
ea.reset();

//stores position offset of branch/leaf in height units
offsets = [0];

for(i=0;i<=linecount;i++) {
  depth = tree[i][IDX.depth];
  if (depth == 1) ea.style.strokeColor = '#'+(Math.random()*0xFFFFFF<<0).toString(16);
  tree[i][IDX.objectId] = ea.addText(depth*width,((tree[i][IDX.size]/2)+offsets[depth])*height,tree[i][IDX.text],{box:true});  
  //set child offset equal to parent offset
  if((depth+1)>offsets.length) offsets.push(offsets[depth]);
  else offsets[depth+1] = offsets[depth];
  offsets[depth] += tree[i][IDX.size];
  if(tree[i][IDX.parent]!=-1) {
    ea.connectObjects(tree[tree[i][IDX.parent]][IDX.objectId],"right",tree[i][IDX.objectId],"left",{startArrowHead: 'dot'});
  }
}

await ea.create({onNewPane: true});
%>

You can find a full description of ExcalidrawAutomate here.

thanks for sharing.

Very cool!

Dear Zsolts,
Thank you so much for all these wonderful tools!!

Is it possible to make the mindmap to treetable format also, which takes less space but still show the tree structure?

Admire~

@zsviczian ，I spent much times to try, but failed. Can you take a minute to tell me how to use the script. Thanks!

the typical issue is having an empty line at the end of the document. The script does not include any error handling, you need to be precise with the input file.