Are there general d3/topojson debugging hints? I am relatively new to the format and have made a visualization through d3 for the US states. The JavaScript and d3 works for a topojson file I had on hand. However, when changing the file to something with more descriptions, no errors or issues were thrown, but I got the following result:
I do not want to post the entire json because it is quite large, but are there any debugging practices you would recommend when dealing with topojson visualization in d3? I am assuming the error is with the transformation, but I am unsure how to approach and remedy the issue.
var svg = d3.select("#map1");
var path = d3.geoPath();
svg.append("g")
.attr("class", "states")
.selectAll("path")
.data(topojson.feature(x, x.objects.states).features)
.enter()
Update: Not looking for anyone to explicitly debug my code. I need to understand what is going wrong for additional projects. But if this is helpful, here's a very small sample of the overall topojson:
{"type":"Topology",
"arcs":[[[1071248,837478],[27,35],[64,83],[44,75],[38,57],[42,29],[32,-10],[38,-33],[35,-57],[32,-447],[-10,-33],[-28,6],[-216,188],[-85,81],[-13,26]],... ]
"transform":{"scale":[0.00008503679331736181,0.00005379922226014208],
"translate":[-179.148909,-14.548699000000001]},
"objects":{"states":{"type":"GeometryCollection",
"geometries":[ {"arcs":[[[0]],[[1]],[[2]],[[3]],[[4]],[[5]],[[6,7,8,9,10]]],
"type":"MultiPolygon",
"properties":{"STATEFP":"01",
"STUSPS":"AL",
"NAME":"Alabama"}},...
Update2: This is the topojson that worked.
{"type":"Topology",
"bbox":[-56.77775821661018,12.469025989284091,942.7924311762474,596.9298966319916],
"transform":{"scale":[0.009995801851947097,0.005844667153098606],
"translate":[-56.77775821661018,12.469025989284091]},
"objects":{"states":{"type":"GeometryCollection","geometries":[{"type":"Polygon","arcs":[[0,1,2,3,4]],"id":"05089"},....
They are both topojson format and can be validated through mapshaper.org, but are slightly different. Would anyone be able to explain the differences.
Copyright Notice：Content Author:「cacti5」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/44264409/d3-topojson-debugging-transformations