Beautiful circos plots in matplotlib about the-python-graph-gallery HOT 2 OPEN

#heatmap
values_all   = [] 
arcdata_dict = collections.defaultdict(dict)
with open("pycircos/sample_data/example_data_rect_gradual.csv") as f:
    f.readline()
    for line in f:
        line  = line.rstrip().split(",")
        name  = line[0]     
        start = int(line[1])-1
        end   = int(line[2]) 
        width = end-start 
        if name not in arcdata_dict:
            arcdata_dict[name]["positions"] = []
            arcdata_dict[name]["widths"]    = [] 
            arcdata_dict[name]["values"]    = [] 
        arcdata_dict[name]["positions"].append(start) 
        arcdata_dict[name]["widths"].append(width)
        arcdata_dict[name]["values"].append(float(line[-1]))
        values_all.append(float(line[-1]))

vmin, vmax = min(values_all), max(values_all) 
for key in arcdata_dict:
    circle.heatmap(key, data=arcdata_dict[key]["values"], positions=arcdata_dict[key]["positions"], 
                   width=arcdata_dict[key]["widths"], raxis_range=[630,670], vmin=vmin, vmax=vmax, 
                   cmap=plt.cm.viridis)