Marker_symbol not applying correctly

đź“Š Plotly Python
1

Based on SO post.

Goal: Alter marker_symbol for each full “data line”.

trace holds the Figure details, including marker_symbol:

'marker_symbol': ['square', 'diamond']

All traces hold the this marker_symbol value:

{'y': [32.69230769230769, 38.333333333333336, 49.23076923076923, 53.1578947368421, 47.0, 43.0, 47.35294117647059, 61.904761904761905, 44.23076923076923, 57.69230769230769, 52.5, 42.5, 45.0, 50.0, 40.294117647058826, 32.857142857142854, 50.0, 54.11764705882353, 50.0, 52.5, 38.75, 39.0, 34.54545454545455, 39.0, 30.0, 32.5, 42.666666666666664, 45.0, 49.333333333333336, 39.285714285714285, 43.1578947368421, 50.65217391304348, 36.666666666666664, 66.25, 39.35897435897436, 42.333333333333336, 30.0, 63.1578947368421, 37.64705882352941, 46.666666666666664, 41.42857142857143, 43.84615384615385, 45.16129032258065, 46.0, 44.285714285714285, 30.526315789473685, 46.1764705882353, 40.0, 43.125, 45.0, 43.57142857142857, 43.5, 56.666666666666664, 34.09090909090909, 46.25, 33.57142857142857, 47.5, 49.166666666666664, 49.333333333333336, 34.44444444444444], 'line': {'color': '#2dd070', 'dash': 'solid', 'width': 2}, 'name': '_percent_Tumour', 'type': 'scatter', 'x': [Timestamp('2020-06-01 00:00:00'), Timestamp('2020-06-02 00:00:00'), Timestamp('2020-06-03 00:00:00'), Timestamp('2020-06-04 00:00:00'), Timestamp('2020-06-05 00:00:00'), Timestamp('2020-06-06 00:00:00'), Timestamp('2020-06-07 00:00:00'), Timestamp('2020-06-08 00:00:00'), Timestamp('2020-06-09 00:00:00'), Timestamp('2020-06-10 00:00:00'), Timestamp('2020-06-11 00:00:00'), Timestamp('2020-06-12 00:00:00'), Timestamp('2020-06-13 00:00:00'), Timestamp('2020-06-14 00:00:00'), Timestamp('2020-06-15 00:00:00'), Timestamp('2020-06-16 00:00:00'), Timestamp('2020-06-17 00:00:00'), Timestamp('2020-06-18 00:00:00'), Timestamp('2020-06-19 00:00:00'), Timestamp('2020-06-20 00:00:00'), Timestamp('2020-06-21 00:00:00'), Timestamp('2020-06-22 00:00:00'), Timestamp('2020-06-23 00:00:00'), Timestamp('2020-06-24 00:00:00'), Timestamp('2020-06-25 00:00:00'), Timestamp('2020-06-26 00:00:00'), Timestamp('2020-06-27 00:00:00'), Timestamp('2020-06-28 00:00:00'), Timestamp('2020-06-29 00:00:00'), Timestamp('2020-06-30 00:00:00'), Timestamp('2020-07-01 00:00:00'), Timestamp('2020-07-02 00:00:00'), Timestamp('2020-07-03 00:00:00'), Timestamp('2020-07-04 00:00:00'), Timestamp('2020-07-05 00:00:00'), Timestamp('2020-07-06 00:00:00'), Timestamp('2020-07-07 00:00:00'), Timestamp('2020-07-08 00:00:00'), Timestamp('2020-07-09 00:00:00'), Timestamp('2020-07-10 00:00:00'), Timestamp('2020-07-11 00:00:00'), Timestamp('2020-07-12 00:00:00'), Timestamp('2020-07-13 00:00:00'), Timestamp('2020-07-14 00:00:00'), Timestamp('2020-07-15 00:00:00'), Timestamp('2020-07-16 00:00:00'), Timestamp('2020-07-17 00:00:00'), Timestamp('2020-07-18 00:00:00'), Timestamp('2020-07-19 00:00:00'), Timestamp('2020-07-20 00:00:00'), Timestamp('2020-07-21 00:00:00'), Timestamp('2020-07-22 00:00:00'), Timestamp('2020-07-23 00:00:00'), Timestamp('2020-07-24 00:00:00'), Timestamp('2020-07-25 00:00:00'), Timestamp('2020-07-26 00:00:00'), Timestamp('2020-07-27 00:00:00'), Timestamp('2020-07-28 00:00:00'), Timestamp('2020-07-29 00:00:00'), Timestamp('2020-07-30 00:00:00')], 'mode': 'lines+markers', 'marker_symbol': ['square', diamond'], 'yaxis': 'y', 'opacity': 0.8, 'error_y': {'type': 'data', 'symmetric': True, 'array': None, 'color': '#2dd070', 'thickness': 2, 'width': 2}, 'marker': {'size': 6}}
{'y': [75.15384615384616, 53.333333333333336, 80.6923076923077, 67.36842105263158, 68.8, 72.1, 64.52941176470588, 60.95238095238095, 63.0, 71.84615384615384, 75.125, 47.6, 56.0, 46.0, 48.76470588235294, 74.57142857142857, 51.0, 73.52941176470588, 77.5, 62.0, 77.0625, 72.5, 66.86363636363636, 56.0, 79.2, 80.9, 59.93333333333333, 55.888888888888886, 70.2, 66.14285714285714, 63.89473684210526, 66.0, 72.55555555555556, 74.0, 54.1025641025641, 66.53333333333333, 80.44444444444444, 69.89473684210526, 71.58823529411765, 71.66666666666667, 56.142857142857146, 47.46153846153846, 72.74193548387096, 78.6, 67.92857142857143, 56.26315789473684, 72.29411764705883, 62.81818181818182, 63.125, 72.0909090909091, 67.52380952380952, 76.5, 74.0, 55.54545454545455, 55.25, 66.28571428571429, 65.0, 77.41666666666667, 66.8, 65.66666666666667], 'line': {'color': '#ff7f0e', 'dash': 'solid', 'width': 2}, 'name': 'Age', 'type': 'scatter', 'x': [Timestamp('2020-06-01 00:00:00'), Timestamp('2020-06-02 00:00:00'), Timestamp('2020-06-03 00:00:00'), Timestamp('2020-06-04 00:00:00'), Timestamp('2020-06-05 00:00:00'), Timestamp('2020-06-06 00:00:00'), Timestamp('2020-06-07 00:00:00'), Timestamp('2020-06-08 00:00:00'), Timestamp('2020-06-09 00:00:00'), Timestamp('2020-06-10 00:00:00'), Timestamp('2020-06-11 00:00:00'), Timestamp('2020-06-12 00:00:00'), Timestamp('2020-06-13 00:00:00'), Timestamp('2020-06-14 00:00:00'), Timestamp('2020-06-15 00:00:00'), Timestamp('2020-06-16 00:00:00'), Timestamp('2020-06-17 00:00:00'), Timestamp('2020-06-18 00:00:00'), Timestamp('2020-06-19 00:00:00'), Timestamp('2020-06-20 00:00:00'), Timestamp('2020-06-21 00:00:00'), Timestamp('2020-06-22 00:00:00'), Timestamp('2020-06-23 00:00:00'), Timestamp('2020-06-24 00:00:00'), Timestamp('2020-06-25 00:00:00'), Timestamp('2020-06-26 00:00:00'), Timestamp('2020-06-27 00:00:00'), Timestamp('2020-06-28 00:00:00'), Timestamp('2020-06-29 00:00:00'), Timestamp('2020-06-30 00:00:00'), Timestamp('2020-07-01 00:00:00'), Timestamp('2020-07-02 00:00:00'), Timestamp('2020-07-03 00:00:00'), Timestamp('2020-07-04 00:00:00'), Timestamp('2020-07-05 00:00:00'), Timestamp('2020-07-06 00:00:00'), Timestamp('2020-07-07 00:00:00'), Timestamp('2020-07-08 00:00:00'), Timestamp('2020-07-09 00:00:00'), Timestamp('2020-07-10 00:00:00'), Timestamp('2020-07-11 00:00:00'), Timestamp('2020-07-12 00:00:00'), Timestamp('2020-07-13 00:00:00'), Timestamp('2020-07-14 00:00:00'), Timestamp('2020-07-15 00:00:00'), Timestamp('2020-07-16 00:00:00'), Timestamp('2020-07-17 00:00:00'), Timestamp('2020-07-18 00:00:00'), Timestamp('2020-07-19 00:00:00'), Timestamp('2020-07-20 00:00:00'), Timestamp('2020-07-21 00:00:00'), Timestamp('2020-07-22 00:00:00'), Timestamp('2020-07-23 00:00:00'), Timestamp('2020-07-24 00:00:00'), Timestamp('2020-07-25 00:00:00'), Timestamp('2020-07-26 00:00:00'), Timestamp('2020-07-27 00:00:00'), Timestamp('2020-07-28 00:00:00'), Timestamp('2020-07-29 00:00:00'), Timestamp('2020-07-30 00:00:00')], 'mode': 'lines+markers', 'marker_symbol': ['square', diamond'], 'yaxis': 'y2', 'opacity': 0.8, 'error_y': {'type': 'data', 'symmetric': True, 'array': None, 'color': '#ff7f0e', 'thickness': 2, 'width': 2}, 'marker': {'size': 6}}

2 Issues

  1. square and diamond markers appear as the first and second data point, on every line.

  2. Default circle marker appears for all the rest of the data points, on every line.

Screenshot

Desired Output

2 lines, 1st being only square markers, 2nd being only diamond markers.

2

Hi,

I think that if you pass an array of symbols to marker_symbol, Plotly will understand as if you are trying to set the symbols individually for each point. The same is true for other properties like size and opacity. This can be confusing in some cases, but I don’t believe it is a bug.

1 Like
3

That makes sense, @jlfsjunior. How would I pass one marker_symbol per line?

4

When looping over each trace, to append values from the front-end to; I had to split up the values over each trace:

line_marker = markers_to_plot[idx + (y_idx * len(aggregated_data))]
5

Yes, or you can specify each marker when constructing the individual traces with go.Scatter