javascript - Amchart XY x 轴步长

Question

我有一个 XY amcharts 图表，其 x 轴从 0 到 250，步长为 50。

由于我的点以 30 分隔，因此我希望网格和轴标签中的步长为 30。

我想更改 step我的 ValueAxis 的属性，但它是只读的。

我尝试设置 "autoGridCount": false 并增加 "gridCount" :在 12 时，步长为 20，在 13 时，步长为 50。有人说更改labelFrequency，但我发现增加或减少它没有任何效果。

我怎样才能得到这个？

Answer 1

var chart = AmCharts.makeChart("chartdiv", {

                      "type": "xy",
                      "dataProvider": json, 
                      "autoMargins": true,
                      "autoMarginOffset" : 10,      //Space left from axis labels/title to the chart's outside border, if autoMargins set to true.          
                      "valueAxes":
                      [                                         
                          {
                            "id":"my_y",
                            "minorGridEnabled" : true,
                            "title":"Y AXIS",
                            "autoGridCount": false,
                            "position": "left",
                            "tickLength":0,
                            "minimum":0,
                            "maximum":240,                          
                            "gridCount": 32, 
                            "labelFrequency" : 1.5,
                            "gridColor":"black",    // center y axis
                            "gridAlpha":0.50,       // grids visibily strength
                            "axisAlpha":0,          // default axis at right hidden
                          }, 
                          {
                            "id":"my_x",    
                            "minorGridEnabled" : true,                      
                            "title":"X AXIS",
                            "autoGridCount": false, 
                            "position": "bottom",                       
                            "tickLength":0,
                            // "gridThickness": 0.25,                           
                            "minimum": 0,
                            "maximum":240,
                            "gridCount": 32,

                            "labelFrequency" : 1.5,
                            "gridColor":"black",    // center x axis
                            "gridAlpha":0.50,       // grids visibily strength                  
                            "axisAlpha":0,          // default axis at bottom hidden
                            "strictGridCount" : true,
                          },                  
                      ],
                      "borderAlpha" : 0,    // opacity border of chart
                      "startDuration": 0,   // animation , 0 = no animation

                      "legend":[{                       
                        "useGraphSettings": false,
                        "verticalGap":0,
                      }],
                      "graphs": 
                      [                              
                          {
                            "id":"g1",

                            // "valueAxis": "v1",
                            "lineColor": "#FF6600",
                            // "bullet": "round",
                            "bulletBorderThickness": 1,
                            "hideBulletsCount": 30,
                            "animationDuration":0,
                            "bullet": "circle",
                            "colorField":"mycolor",
                            "valueField": "value",
                            "xField": "x",
                            "yField": "y",
                            "fillAlphas": 0,    // 0 to avoid creating filled polygon with bullets, default = 0
                            "bulletBorderAlpha": 0,
                            "minBulletSize": 30,
                            "maxBulletSize": 30,
                            "labelText":"[[x]]",
                            "labelPosition":"inside",
                            "markerType" : "none",
                            "switchable":false,
                          }, 

                      ],
                      "marginLeft": 20,
                      "marginBottom": 20,

                      "listeners": [
                              {
                                "event": "drawn",
                                "method": addLegendLabel
                              },                              
                              ],
                      "export": {
                                  "enabled": true,
                                  "menu" : [],  
                                },
                    }); 

希望这是你想要的..抱歉上次太匆忙，所以答案不明确