我正在尝试使用力导向布局在 VEGA 中创建网络图，该布局显示每个节点的标签。这个问题中提到了一种可能的方法。通过参考Vega编辑器，我们可以观察到标签是存在的，但是存在一些重叠和视觉混乱的问题。
因此，我想知道是否有可能实现与此示例类似的结果，其中标签在将鼠标悬停在节点上时出现，并在图表中保持突出显示和固定。
我尝试了“文本”字段中的一些更改，但我想它可能比这更复杂。
使用此配置：
{ "$schema": "https://vega.github.io/schema/vega/v5.json", "description": "A node-link diagram with force-directed layout, depicting character co-occurrence in the novel Les Misérables.", "width": 700, "height": 500, "padding": 0, "autosize": "none", "signals": [ { "name": "cx", "update": "width / 2" }, { "name": "cy", "update": "height / 2" }, { "name": "nodeRadius", "value": 8, "bind": {"input": "range", "min": 1, "max": 50, "step": 1} }, { "name": "nodeCharge", "value": -30, "bind": {"input": "range", "min":-100, "max": 10, "step": 1} }, { "name": "linkDistance", "value": 30, "bind": {"input": "range", "min": 5, "max": 100, "step": 1} }, { "name": "static", "value": true, "bind": {"input": "checkbox"} }, { "description": "State variable for active node fix status.", "name": "fix", "value": false, "on": [ { "events": "symbol:mouseout[!event.buttons], window:mouseup", "update": "false" }, { "events": "symbol:mouseover", "update": "fix || true" }, { "events": "[symbol:mousedown, window:mouseup] > window:mousemove!", "update": "xy()", "force": true } ] }, { "description": "Graph node most recently interacted with.", "name": "node", "value": null, "on": [ { "events": "symbol:mouseover", "update": "fix === true ? item() : node" } ] }, { "description": "Flag to restart Force simulation upon data changes.", "name": "restart", "value": false, "on": [ {"events": {"signal": "fix"}, "update": "fix && fix.length"} ] } ], "data": [ { "name": "node-data", "url": "data/miserables.json", "format": {"type": "json", "property": "nodes"} }, { "name": "link-data", "url": "data/miserables.json", "format": {"type": "json", "property": "links"} } ], "scales": [ { "name": "color", "type": "ordinal", "domain": {"data": "node-data", "field": "group"}, "range": {"scheme": "category20c"} } ], "marks": [ { "name": "nodes", "type": "symbol", "zindex": 1, "from": {"data": "node-data"}, "on": [ { "trigger": "fix", "modify": "node", "values": "fix === true ? {fx: node.x, fy: node.y} : {fx: fix[0], fy: fix[1]}" }, { "trigger": "!fix", "modify": "node", "values": "{fx: null, fy: null}" } ], "encode": { "enter": { "fill": {"scale": "color", "field": "group"}, "stroke": {"value": "white"} }, "update": { "size": {"signal": "2 * nodeRadius * nodeRadius"}, "cursor": {"value": "pointer"} } }, "transform": [ { "type": "force", "iterations": 300, "restart": {"signal": "restart"}, "static": {"signal": "static"}, "signal": "force", "forces": [ {"force": "center", "x": {"signal": "cx"}, "y": {"signal": "cy"}}, {"force": "collide", "radius": {"signal": "nodeRadius"}}, {"force": "nbody", "strength": {"signal": "nodeCharge"}}, {"force": "link", "links": "link-data", "distance": {"signal": "linkDistance"}} ] } ] }, { "type": "text", "from": {"data": "nodes"}, "zIndex": 2, "encode": { "enter": { "align": {"value": "center"}, "baseline": {"value": "middle"}, "fontSize": {"value": 15}, "fontWeight": {"value": "bold"}, "fill": {"value": "black"}, "text": {"field": "datum.name"} }, "update": {"dx": {"field": "x"}, "dy": {"field": "y"}} } }, { "type": "path", "from": {"data": "link-data"}, "interactive": false, "encode": { "update": { "stroke": {"value": "#ccc"}, "strokeWidth": {"value": 0.5} } }, "transform": [ { "type": "linkpath", "require": {"signal": "force"}, "shape": "line", "sourceX": "datum.source.x", "sourceY": "datum.source.y", "targetX": "datum.target.x", "targetY": "datum.target.y" } ] } ] }
我不太清楚您的要求。我创建了这个力导向图表，并在此处添加了标签：
https://vega.github.io/vega/examples/打包气泡图/
这是我也使用动态标签创建的力导向布局。
https://github.com/PBI-David/Deneb-Showcase
这些有帮助吗？
使用此配置：
{ "$schema": "https://vega.github.io/schema/vega/v5.json", "description": "A node-link diagram with force-directed layout, depicting character co-occurrence in the novel Les Misérables.", "width": 700, "height": 500, "padding": 0, "autosize": "none", "signals": [ { "name": "cx", "update": "width / 2" }, { "name": "cy", "update": "height / 2" }, { "name": "nodeRadius", "value": 8, "bind": {"input": "range", "min": 1, "max": 50, "step": 1} }, { "name": "nodeCharge", "value": -30, "bind": {"input": "range", "min":-100, "max": 10, "step": 1} }, { "name": "linkDistance", "value": 30, "bind": {"input": "range", "min": 5, "max": 100, "step": 1} }, { "name": "static", "value": true, "bind": {"input": "checkbox"} }, { "description": "State variable for active node fix status.", "name": "fix", "value": false, "on": [ { "events": "symbol:mouseout[!event.buttons], window:mouseup", "update": "false" }, { "events": "symbol:mouseover", "update": "fix || true" }, { "events": "[symbol:mousedown, window:mouseup] > window:mousemove!", "update": "xy()", "force": true } ] }, { "description": "Graph node most recently interacted with.", "name": "node", "value": null, "on": [ { "events": "symbol:mouseover", "update": "fix === true ? item() : node" } ] }, { "description": "Flag to restart Force simulation upon data changes.", "name": "restart", "value": false, "on": [ {"events": {"signal": "fix"}, "update": "fix && fix.length"} ] } ], "data": [ { "name": "node-data", "url": "data/miserables.json", "format": {"type": "json", "property": "nodes"} }, { "name": "link-data", "url": "data/miserables.json", "format": {"type": "json", "property": "links"} } ], "scales": [ { "name": "color", "type": "ordinal", "domain": {"data": "node-data", "field": "group"}, "range": {"scheme": "category20c"} } ], "marks": [ { "name": "nodes", "type": "symbol", "zindex": 1, "from": {"data": "node-data"}, "on": [ { "trigger": "fix", "modify": "node", "values": "fix === true ? {fx: node.x, fy: node.y} : {fx: fix[0], fy: fix[1]}" }, { "trigger": "!fix", "modify": "node", "values": "{fx: null, fy: null}" } ], "encode": { "enter": { "fill": {"scale": "color", "field": "group"}, "stroke": {"value": "white"} }, "update": { "size": {"signal": "2 * nodeRadius * nodeRadius"}, "cursor": {"value": "pointer"} } }, "transform": [ { "type": "force", "iterations": 300, "restart": {"signal": "restart"}, "static": {"signal": "static"}, "signal": "force", "forces": [ {"force": "center", "x": {"signal": "cx"}, "y": {"signal": "cy"}}, {"force": "collide", "radius": {"signal": "nodeRadius"}}, {"force": "nbody", "strength": {"signal": "nodeCharge"}}, {"force": "link", "links": "link-data", "distance": {"signal": "linkDistance"}} ] } ] }, { "type": "text", "from": {"data": "nodes"}, "zIndex": 2, "encode": { "enter": { "align": {"value": "center"}, "baseline": {"value": "middle"}, "fontSize": {"value": 15}, "fontWeight": {"value": "bold"}, "fill": {"value": "black"}, "text": {"field": "datum.name"} }, "update": {"dx": {"field": "x"}, "dy": {"field": "y"}} } }, { "type": "path", "from": {"data": "link-data"}, "interactive": false, "encode": { "update": { "stroke": {"value": "#ccc"}, "strokeWidth": {"value": 0.5} } }, "transform": [ { "type": "linkpath", "require": {"signal": "force"}, "shape": "line", "sourceX": "datum.source.x", "sourceY": "datum.source.y", "targetX": "datum.target.x", "targetY": "datum.target.y" } ] } ] }我不太清楚您的要求。我创建了这个力导向图表，并在此处添加了标签：
https://vega.github.io/vega/examples/打包气泡图/
这是我也使用动态标签创建的力导向布局。
https://github.com/PBI-David/Deneb-Showcase
这些有帮助吗？