python - matplotlib.FuncAnimation not removing some data from plot -
i plotting position data on time matplotlib.basemap , matplotlib.animation. there maximum of point_number points, points being gradually introduced , removed being present or not in data.
i.e.
day 1 -------- 1 some-lon some-lat 2 some-lon some-lat day 2 -------- 1 some-lon some-lat 2 some-lon some-lat 3 some-lon some-lat day 3 -------- 2 some-lon some-lat everything animates fine until number of points begins decrease (as on day 3), @ point number of points plotted (equal no longer present on day 3) remain frozen on map.
this appears due init() routine not doing job. setting each point equal empty object, can't seem figure out why doing this.
init() function:
def init(): pt in pts_dots: pt.set_data([], []) return pts_dots animation() function:
def animate(i): # filter out daily data pandas dataframe lons = data.lons[data.daynr==dates[i]].values lats = data.lats[data.daynr==dates[i]].values z in range(len(lons)): x, y = m(lons[z],lats[z]) pts_dots[z].set_data(x, y) # attempting "empty" objects values absent z in range(point_number-len(lons)): pts_dots[z].set_data([],[]) return pts_dots animation call:
pts_dots = [[] in range(point_number)] # animation point global list in range(point_number): pts_dots[i] = m.plot(x,y, 'ro', markersize=5)[0] anim = animation.funcanimation(plt.gcf(), animate, init_func=init, frames=f_num, interval=animate_range, blit=true) any idea may going on here? thanks!
data snippet:
+------+-------+----------+-------------+-------------+ | | daynr | point_id | lons | lats | +------+-------+----------+-------------+-------------+ | 171 | 7.0 | 2 | -4.45366398 | 60.72650532 | | 241 | 8.0 | 2 | -4.00647587 | 61.01281524 | | 242 | 8.0 | 3 | -4.45183701 | 60.71743553 | | 243 | 8.0 | 5 | -7.92443966 | 61.34647079 | | 325 | 9.0 | 2 | -3.55301 | 61.30035716 | | 326 | 9.0 | 3 | -3.99834681 | 61.00068353 | | 327 | 9.0 | 4 | -4.44165093 | 60.72803087 | | 328 | 9.0 | 5 | -7.41926307 | 61.61805212 | | 412 | 10.0 | 1 | -7.90065375 | 61.34230534 | | 413 | 10.0 | 2 | -3.09927833 | 61.5869605 | | 414 | 10.0 | 3 | -3.54755914 | 61.28483512 | | 415 | 10.0 | 4 | -3.99194122 | 61.01493663 | | 416 | 10.0 | 5 | -5.82052964 | 62.12547394 | | 504 | 11.0 | 1 | -7.40200065 | 61.61242493 | | 505 | 11.0 | 2 | -2.63697802 | 61.87711064 | | 506 | 11.0 | 3 | -3.08461278 | 61.57107991 | | 507 | 11.0 | 4 | -3.53868532 | 61.2991389 | | 508 | 11.0 | 5 | -5.30487041 | 62.3976168 | | 597 | 12.0 | 1 | -6.60641348 | 62.26026119 | | 598 | 12.0 | 2 | -2.17446179 | 62.16981877 | | 599 | 12.0 | 3 | -2.62998793 | 61.86510687 | | 600 | 12.0 | 4 | -3.08032268 | 61.58919812 | | 601 | 12.0 | 5 | -4.79651341 | 62.67039254 | | 694 | 13.0 | 1 | -6.08703929 | 62.53172291 | | 695 | 13.0 | 2 | -1.7127866 | 62.46318164 | | 696 | 13.0 | 3 | -2.17614685 | 62.15537983 | | 697 | 13.0 | 4 | -2.62316597 | 61.88067335 | | 698 | 13.0 | 5 | -4.28827737 | 62.94939414 | | 794 | 14.0 | 1 | -5.56028452 | 62.79949887 | | 795 | 14.0 | 2 | -1.24521666 | 62.75546024 | | 796 | 14.0 | 3 | -1.71300992 | 62.44833943 | | 797 | 14.0 | 4 | -2.16482898 | 62.17056137 | | 798 | 14.0 | 5 | -3.77037748 | 63.2290821 | | 894 | 15.0 | 1 | -5.71432399 | 62.44689183 | | 895 | 15.0 | 2 | -0.77802644 | 63.0510241 | | 896 | 15.0 | 3 | -1.25380314 | 62.74107774 | | 897 | 15.0 | 4 | -1.7003722 | 62.46102404 | | 898 | 15.0 | 5 | -3.25720983 | 63.5068827 | | 994 | 16.0 | 1 | -5.59137769 | 62.08532967 | | 995 | 16.0 | 2 | -0.30805077 | 63.34665516 | | 996 | 16.0 | 3 | -0.78319223 | 63.03575662 | | 997 | 16.0 | 4 | -1.23957285 | 62.75271172 | | 998 | 16.0 | 5 | -2.75050842 | 63.78709738 | | 1094 | 17.0 | 1 | -5.71709194 | 61.72990759 | | 1095 | 17.0 | 2 | 0.15062701 | 63.64276531 | | 1096 | 17.0 | 3 | -1.42640622 | 62.8293313 | | 1097 | 17.0 | 4 | -0.77191719 | 63.04631626 | | 1098 | 17.0 | 5 | -2.23675898 | 64.07140725 | | 1194 | 18.0 | 1 | -5.84315356 | 61.37380764 | | 1195 | 18.0 | 2 | -0.37369111 | 63.37029853 | | 1196 | 18.0 | 3 | -1.90305652 | 62.54377504 | | 1197 | 18.0 | 4 | -0.30628721 | 63.33942171 | | 1198 | 18.0 | 5 | -1.7196634 | 64.355484 | | 1294 | 19.0 | 1 | -5.2628807 | 61.1454648 | | 1295 | 19.0 | 2 | -0.92225023 | 63.11307572 | | 1296 | 19.0 | 3 | -2.32185799 | 62.24064625 | | 1297 | 19.0 | 4 | 0.16220025 | 63.63782642 | | 1298 | 19.0 | 5 | -2.27735206 | 64.08689711 | | 1394 | 20.0 | 1 | -6.00380815 | 61.17190429 | | 1395 | 20.0 | 2 | -1.57348486 | 62.90934753 | | 1396 | 20.0 | 3 | -2.9061956 | 62.00581576 | | 1397 | 20.0 | 4 | 0.63065135 | 63.9345848 | | 1398 | 20.0 | 5 | -2.49747739 | 63.7426637 | | 1493 | 21.0 | 1 | -6.75167242 | 61.22029862 | | 1494 | 21.0 | 2 | -1.97949208 | 62.59848653 | | 1495 | 21.0 | 3 | -3.56641468 | 61.82230198 | | 1496 | 21.0 | 4 | 0.0176544 | 63.69946287 | | 1497 | 21.0 | 5 | -2.85047365 | 63.41953451 | | 1587 | 22.0 | 1 | -7.49038571 | 61.2681404 | | 1588 | 22.0 | 2 | -2.56974239 | 62.35995893 | | 1589 | 22.0 | 3 | -4.03747684 | 61.54029225 | | 1590 | 22.0 | 4 | -0.56825407 | 63.45703496 | | 1591 | 22.0 | 5 | -3.10192883 | 63.0782619 | | 1679 | 23.0 | 1 | -6.78479647 | 61.14594969 | | 1680 | 23.0 | 2 | -3.15971365 | 62.12655957 | | 1681 | 23.0 | 3 | -4.77551934 | 61.48315198 | | 1682 | 23.0 | 4 | -1.20257268 | 63.23739608 | | 1683 | 23.0 | 5 | -3.35273464 | 62.73608292 | | 1766 | 24.0 | 1 | -7.48894785 | 61.26483922 | | 1767 | 24.0 | 2 | -3.61670316 | 61.83964718 | | 1768 | 24.0 | 3 | -5.44135019 | 61.31067048 | | 1769 | 24.0 | 4 | -1.68497622 | 62.95139694 | | 1770 | 24.0 | 5 | -3.60826477 | 62.39478414 | | 1851 | 25.0 | 2 | -4.1577626 | 61.58987649 | | 1852 | 25.0 | 3 | -6.09732902 | 61.13961171 | | 1853 | 25.0 | 4 | -2.36817354 | 62.77207285 | | 1854 | 25.0 | 5 | -4.09030225 | 62.10817621 | | 1934 | 26.0 | 1 | -6.78250548 | 61.14562163 | | 1935 | 26.0 | 2 | -4.26932018 | 61.23393004 | | 1936 | 26.0 | 3 | -5.46586982 | 60.95023225 | | 1937 | 26.0 | 4 | -2.903176 | 62.50884564 | | 1938 | 26.0 | 5 | -4.57302758 | 61.82364897 | | 2018 | 27.0 | 1 | -7.15642824 | 61.2098756 | | 2019 | 27.0 | 2 | -4.38717574 | 60.87630252 | | 2020 | 27.0 | 3 | -4.77991484 | 60.80961114 | | 2021 | 27.0 | 4 | -3.4821231 | 62.26664477 | | 2022 | 27.0 | 5 | -4.51805801 | 61.46261821 | | 2101 | 28.0 | 1 | -6.45087653 | 61.08953278 | | 2102 | 28.0 | 2 | -5.10962837 | 60.95808701 | | 2103 | 28.0 | 3 | -5.47168995 | 60.92719014 | | 2104 | 28.0 | 4 | -3.85846896 | 61.95312546 | | 2105 | 28.0 | 5 | -4.31627368 | 61.11404727 | | 2181 | 29.0 | 1 | -7.15367019 | 61.20996396 | | 2182 | 29.0 | 2 | -4.4685451 | 60.77766143 | | 2183 | 29.0 | 3 | -5.57426471 | 60.93922674 | | 2184 | 29.0 | 4 | -4.3348975 | 61.66888486 | | 2185 | 29.0 | 5 | -4.96446093 | 60.93709383 | | 2254 | 30.0 | 2 | -4.42456883 | 60.73181243 | | 2255 | 30.0 | 4 | -4.22187879 | 61.30985271 | | 2256 | 30.0 | 5 | -5.6922579 | 60.98634563 | | 2322 | 31.0 | 4 | -4.96950637 | 61.314032 | | 2323 | 31.0 | 5 | -6.39554038 | 61.09783538 | | 2390 | 32.0 | 3 | -6.24088918 | 61.0563245 | | 2391 | 32.0 | 4 | -4.55267037 | 61.01582872 | | 2392 | 32.0 | 5 | -6.35170419 | 61.07596667 | | 2454 | 33.0 | 4 | -5.27982039 | 60.95963728 | | 2455 | 33.0 | 5 | -7.05496009 | 61.19298776 | | 2514 | 34.0 | 1 | -6.39671804 | 61.08225977 | | 2515 | 34.0 | 4 | -6.00036916 | 61.04043063 | | 2516 | 34.0 | 5 | -6.34544218 | 61.07435974 | | 2571 | 35.0 | 4 | -6.3522571 | 61.07221175 | | 2572 | 35.0 | 5 | -6.35287665 | 61.07582546 | | 2659 | 37.0 | 5 | -5.96382779 | 61.00587669 | | 2758 | 42.0 | 2 | -5.09121351 | 60.85182831 | | 2891 | 58.0 | 4 | -5.65987894 | 60.95238083 | | 2895 | 59.0 | 4 | -5.96656035 | 61.0058948 | | 2898 | 64.0 | 4 | -6.67680629 | 61.12872095 | +------+-------+----------+-------------+-------------+
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