elasticsearch Vega lite热图“;“转变”;isn';不正常工作
1) 有X坐标和Y坐标。有一个Z值。Z需要计算平均值elasticsearch Vega lite热图“;“转变”;isn';不正常工作,elasticsearch,kibana,heatmap,vega,vega-lite,elasticsearch,Kibana,Heatmap,Vega,Vega Lite,1) 有X坐标和Y坐标。有一个Z值。Z需要计算平均值 "data": { "values": [ {"x": 0, "y": 0, "z": 0}, {"x": 1, "y": 0, "z": 1}, {"x": 2, "y": 0, "z": 5}, {"x": 2, "y": 0, "z": 10}, {"x": 4, "y": 0, "z": 16}, {"x": 0, "y": 1, "z": 1}, {"x": 1, "y": 1, "z": 2}, {
"data": {
"values": [
{"x": 0, "y": 0, "z": 0},
{"x": 1, "y": 0, "z": 1},
{"x": 2, "y": 0, "z": 5},
{"x": 2, "y": 0, "z": 10},
{"x": 4, "y": 0, "z": 16},
{"x": 0, "y": 1, "z": 1},
{"x": 1, "y": 1, "z": 2},
{"x": 2, "y": 1, "z": 5},
{"x": 3, "y": 1, "z": 10},
{"x": 5, "y": 1, "z": 26}
]},
如果数据:
"encoding": {
"x": {"field": "x", "type": "ordinal", "title": "X"},
"y": {"field": "y", "type": "ordinal", "title": "Y"} },
那么平均值是对的:
如果我将“transform”与“groupby”一起使用:
那么AVG这不是真的:
转换正按照您的指示执行:
{"window": [{"op": "count", "field": "x", "as": "x2"}], "groupby": ["y"]}
它按y
对数据进行分组。示意图如下所示:
y=0: x: [0, 1, 2, 2, 4]
z: [0, 1, 5, 10, 16]
y=1: x: [0, 1, 2, 3, 5]
z: [1, 2, 5, 10, 26]
然后它执行滑动窗口并将计数分配给x2
:
y=0: x: [0, 1, 2, 2, 4]
z: [0, 1, 5, 10, 16]
x2: [1, 2, 3, 4, 5]
y=1: x: [0, 1, 2, 3, 5]
z: [1, 2, 5, 10, 26]
x2: [1, 2, 3, 4, 5]
如您所见,当您创建y
vsx2
的绘图时,现在每个位置都有一个z
值,这正确反映在上面显示的图表中
如果需要不同的行为,则应指定不同的变换
y=0: x: [0, 1, 2, 2, 4]
z: [0, 1, 5, 10, 16]
x2: [1, 2, 3, 4, 5]
y=1: x: [0, 1, 2, 3, 5]
z: [1, 2, 5, 10, 26]
x2: [1, 2, 3, 4, 5]