热图错误“TraitError：热图实例的'位置'特征必须是长度”答案

【问题标题】：Heatmap error "TraitError: The 'locations' trait of a Heatmap instance must be of length"热图错误“TraitError：热图实例的'位置'特征必须是长度”
【发布时间】：2021-12-28 19:41:29
【问题描述】：

我正在尝试在 Jupyter Notebook 上使用 Javascript 运行将坐标注册到热图上的代码。我的代码是：

import gmaps
import gmaps.datasets
gmaps.configure(api_key="MY API KEY")

data = [(-89.91161093276477, 35.241969778429194), (-89.87947624903887, 35.195319161704404), (-89.81418532101328, 35.17188216058175), (-89.75643652692003, 35.183538628834484), (-89.7496498284386, 35.14509890887518), (-89.78504762327763, 35.063349559432304), (-89.83100682136623, 35.013757847903044), (-89.85342496546569, 35.001086997562474)]
m = gmaps.Map()
heatmap_layer = gmaps.Heatmap(data=data)
m.add_layer(heatmap_layer)
m

但我不断收到错误：

TraitError: The 'locations' trait of a Heatmap instance must be of length 1 <= L <= 9223372036854775807, but a value of [] was specified.

这是什么意思，我该如何解决？

【问题讨论】：

标签： python google-maps jupyter-notebook

【解决方案1】：

您看到此错误是因为该函数需要 locations 并且您没有在那里定义任何内容。我认为您也没有正确调用您的heatmap_layer。

https://jupyter-gmaps.readthedocs.io/en/latest/tutorial.html#heatmaps

试试这个：

import gmaps.datasets
gmaps.configure(api_key="MY API KEY")

locations = [(-89.91161093276477, 35.241969778429194), (-89.87947624903887, 35.195319161704404), (-89.81418532101328, 35.17188216058175), (-89.75643652692003, 35.183538628834484), (-89.7496498284386, 35.14509890887518), (-89.78504762327763, 35.063349559432304), (-89.83100682136623, 35.013757847903044), (-89.85342496546569, 35.001086997562474)]
m = gmaps.Map()
heatmap_layer = gmaps.heatmap_layer(locations)
m.add_layer(heatmap_layer)
m

【讨论】：