{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "## Matplotlib Animation\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Method 1" ] }, { "cell_type": "code", "execution_count": 1, "metadata": {}, "outputs": [ { "data": { "image/png": "iVBORw0KGgoAAAANSUhEUgAAAYcAAAD8CAYAAACcjGjIAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzAAALEgAACxIB0t1+/AAAADl0RVh0U29mdHdhcmUAbWF0cGxvdGxpYiB2ZXJzaW9uIDMuMC4wLCBodHRwOi8vbWF0cGxvdGxpYi5vcmcvqOYd8AAAEatJREFUeJzt3X+MZWV9x/H3pyxgRKIoqyA/BNJNKbRacYI/02LFClt1/ZlA2gr+yFYrraZNGyyJNv5Tmya1MRrpRonQGMGi6FrXIgiGWgIykOXHguiy2rIrlREsSrTY1W//uAe9zjOzM3jOvXfQ9yuZzDnPee55vvPMYT+ce849k6pCkqRxvzLrAiRJa4/hIElqGA6SpIbhIElqGA6SpIbhIElq9A6HJEcluTrJ7Ul2JHnbEn2S5H1Jdia5JclJfceVJE3OugH2sRf4i6q6KcnBwI1Jrqiq28f6nA5s6L6eDXyw+y5JWoN6nzlU1T1VdVO3/D3gDuCIRd02ARfVyHXAE5Ic3ndsSdJkDHHm8BNJjgGeCVy/aNMRwN1j67u7tnuW2MdmYDPAQQcd9Kzjjz9+yBIl6RfajTfe+O2qWt93P4OFQ5LHAZ8A3l5V3/1591NVW4AtAHNzczU/Pz9QhZL0iy/Jfw6xn0HuVkqyP6Ng+GhVfXKJLnuAo8bWj+zaJElr0BB3KwX4MHBHVf3DMt22Aq/r7lp6DvBAVTVvKUmS1oYh3lZ6PvBHwK1Jtndtfw0cDVBV5wPbgI3ATuD7wOsHGFeSNCG9w6GqvgRkhT4FvLXvWJKk6fAT0pKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoMEg5JLkhyb5Lbltl+SpIHkmzvvt45xLiSpMno/TekOx8B3g9ctI8+/15VLx1oPEnSBA1y5lBV1wD3D7EvSdLsTfOaw3OT3Jzkc0lOnOK4kqRHaKi3lVZyE/C0qnowyUbgU8CGpTom2QxsBjj66KOnVJ4kadxUzhyq6rtV9WC3vA3YP8mhy/TdUlVzVTW3fv36aZQnSVpkKuGQ5LAk6ZZP7sa9bxpjS5IeuUHeVkryMeAU4NAku4F3AfsDVNX5wGuAtyTZC/wAOKOqaoixJUnDGyQcqurMFba/n9GtrpKkRwE/IS1JahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJahgOkqSG4SBJagwSDkkuSHJvktuW2Z4k70uyM8ktSU4aYlxJ0mQMdebwEeC0fWw/HdjQfW0GPjjQuJKkCRgkHKrqGuD+fXTZBFxUI9cBT0hy+BBjS5KGN61rDkcAd4+t7+7aGkk2J5lPMr+wsDCV4iRJP2vNXZCuqi1VNVdVc+vXr591OZL0S2la4bAHOGps/ciuTZK0Bk0rHLYCr+vuWnoO8EBV3TOlsSVJj9C6IXaS5GPAKcChSXYD7wL2B6iq84FtwEZgJ/B94PVDjCtJmoxBwqGqzlxhewFvHWIsSdLkrbkL0pKk2TMcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEmNQcIhyWlJ7kyyM8m5S2w/O8lCku3d15uGGFeSNBm9/4Z0kv2ADwAvBnYDNyTZWlW3L+p6SVWd03c8SdLkDXHmcDKws6p2VdUPgYuBTQPsV5I0I0OEwxHA3WPru7u2xV6d5JYklyY5armdJdmcZD7J/MLCwgDlSZIeqWldkP4McExVPR24ArhwuY5VtaWq5qpqbv369VMqT5I0bohw2AOMnwkc2bX9RFXdV1UPdasfAp41wLiSpAkZIhxuADYkOTbJAcAZwNbxDkkOH1t9OXDHAONKkiak991KVbU3yTnA5cB+wAVVtSPJu4H5qtoK/FmSlwN7gfuBs/uOK0manFTVrGtY1tzcXM3Pz8+6DEl61EhyY1XN9d2Pn5CWJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSY5BwSHJakjuT7Exy7hLbD0xySbf9+iTHDDGuJGkyeodDkv2ADwCnAycAZyY5YVG3NwLfqapfBd4L/F3fcSVJkzPEmcPJwM6q2lVVPwQuBjYt6rMJuLBbvhR4UZIMMLYkaQKGCIcjgLvH1nd3bUv2qaq9wAPAk5baWZLNSeaTzC8sLAxQniTpkVpzF6SraktVzVXV3Pr162ddjiT9UhoiHPYAR42tH9m1LdknyTrg8cB9A4wtSZqAIcLhBmBDkmOTHACcAWxd1GcrcFa3/BrgqqqqAcaWJE3Aur47qKq9Sc4BLgf2Ay6oqh1J3g3MV9VW4MPAPyfZCdzPKEAkSWtU73AAqKptwLZFbe8cW/5f4LVDjCVJmrw1d0FakjR7hoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqWE4SJIahoMkqdErHJI8MckVSb7WfT9kmX4/SrK9+9raZ0xJ0uT1PXM4F/hCVW0AvtCtL+UHVfVb3dfLe44pSZqwvuGwCbiwW74QeEXP/UmS1oC+4fCUqrqnW/5v4CnL9HtMkvkk1yXZZ4Ak2dz1nV9YWOhZniTp57FupQ5JrgQOW2LTeeMrVVVJapndPK2q9iQ5Drgqya1VdddSHatqC7AFYG5ubrn9SZImaMVwqKpTl9uW5FtJDq+qe5IcDty7zD72dN93Jfki8ExgyXCQJM1e37eVtgJndctnAZ9e3CHJIUkO7JYPBZ4P3N5zXEnSBPUNh/cAL07yNeDUbp0kc0k+1PX5dWA+yc3A1cB7qspwkKQ1bMW3lfalqu4DXrRE+zzwpm75WuA3+4wjSZouPyEtSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkhuEgSWoYDpKkRq9wSPLaJDuS/DjJ3D76nZbkziQ7k5zbZ0xJ0uT1PXO4DXgVcM1yHZLsB3wAOB04ATgzyQk9x5UkTdC6Pi+uqjsAkuyr28nAzqra1fW9GNgE3N5nbEnS5EzjmsMRwN1j67u7tiUl2ZxkPsn8wsLCxIuTJLVWPHNIciVw2BKbzquqTw9dUFVtAbYAzM3N1dD7lyStbMVwqKpTe46xBzhqbP3Irk2StEZN422lG4ANSY5NcgBwBrB1CuNKkn5OfW9lfWWS3cBzgc8mubxrf2qSbQBVtRc4B7gcuAP4eFXt6Fe2JGmS+t6tdBlw2RLt3wQ2jq1vA7b1GUuSND1+QlqS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEkNw0GS1DAcJEmNvn9D+rVJdiT5cZK5ffT7RpJbk2xPMt9nTEnS5PX6G9LAbcCrgH9aRd8XVtW3e44nSZqCXuFQVXcAJBmmGknSmjCtaw4FfD7JjUk2T2lMSdLPacUzhyRXAoctsem8qvr0Ksd5QVXtSfJk4IokX6mqa5YZbzOwGeDoo49e5e4lSUNaMRyq6tS+g1TVnu77vUkuA04GlgyHqtoCbAGYm5urvmNLkh65ib+tlOSgJAc/vAz8HqML2ZKkNarvrayvTLIbeC7w2SSXd+1PTbKt6/YU4EtJbga+DHy2qv6tz7iSpMnqe7fSZcBlS7R/E9jYLe8CntFnHEnSdPkJaUlSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSo1c4JPn7JF9JckuSy5I8YZl+pyW5M8nOJOf2GVOSNHl9zxyuAH6jqp4OfBV4x+IOSfYDPgCcDpwAnJnkhJ7jSpImqFc4VNXnq2pvt3odcOQS3U4GdlbVrqr6IXAxsKnPuJKkyVo34L7eAFyyRPsRwN1j67uBZy+3kySbgc3d6kNJbhuswsk4FPj2rItYBesclnUOyzqH82tD7GTFcEhyJXDYEpvOq6pPd33OA/YCH+1bUFVtAbZ0+52vqrm++5ykR0ONYJ1Ds85hWedwkswPsZ8Vw6GqTl2hkLOBlwIvqqpaosse4Kix9SO7NknSGtX3bqXTgL8CXl5V31+m2w3AhiTHJjkAOAPY2mdcSdJk9b1b6f3AwcAVSbYnOR8gyVOTbAPoLlifA1wO3AF8vKp2rHL/W3rWNw2PhhrBOodmncOyzuEMUmOWfidIkvTLzE9IS5IahoMkqTGTcFjpcRpJDkxySbf9+iTHjG17R9d+Z5KXzLjOP09ye/f4kC8kedrYth9112G2J5noBfhV1Hl2koWxet40tu2sJF/rvs6acZ3vHavxq0n+Z2zbVOYzyQVJ7l3u8zUZeV/3M9yS5KSxbdOcy5Xq/IOuvluTXJvkGWPbvtG1bx/qtscedZ6S5IGx3+07x7ZN5bE7q6jxL8fqu607Fp/YbZvmXB6V5Oru35wdSd62RJ/hjs+qmuoXsB9wF3AccABwM3DCoj5/ApzfLZ8BXNItn9D1PxA4ttvPfjOs84XAY7vltzxcZ7f+4Bqaz7OB9y/x2icCu7rvh3TLh8yqzkX9/xS4YAbz+dvAScBty2zfCHwOCPAc4Pppz+Uq63zew+MzenTN9WPbvgEcukbm8xTgX/seL5OscVHflwFXzWguDwdO6pYPZvTIosX/rQ92fM7izGE1j9PYBFzYLV8KvChJuvaLq+qhqvo6sLPb30zqrKqr66e38C73+JBJ6/N4kpcAV1TV/VX1HUbPyjptjdR5JvCxCdWyrKq6Brh/H102ARfVyHXAE5IcznTncsU6q+rarg6Y3bG5mvlcztQeu/MIa5zJcQlQVfdU1U3d8vcY3f15xKJugx2fswiHpR6nsfgH/EmfGt0K+wDwpFW+dpp1jnsjo8R+2GOSzCe5LskrJlFgZ7V1vro7zbw0ycMfSlyT89m9PXcscNVY87TmcyXL/RzTnMtHavGxWcDnk9yY0eNqZu25SW5O8rkkJ3Zta24+kzyW0T+onxhrnslcZvRW+zOB6xdtGuz4HPLZSr+0kvwhMAf8zljz06pqT5LjgKuS3FpVd82mQj4DfKyqHkryx4zOyn53RrWsxhnApVX1o7G2tTSfjxpJXsgoHF4w1vyCbi6fzOgzSl/p/u95Fm5i9Lt9MMlG4FPAhhnVspKXAf9RVeNnGVOfyySPYxRQb6+q705qnFmcOazmcRo/6ZNkHfB44L5VvnaadZLkVOA8Rp8Sf+jh9qra033fBXyRUcrPpM6qum+stg8Bz1rta6dZ55gzWHTqPsX5XMlyP8eae0xMkqcz+n1vqqr7Hm4fm8t7gcuY3FuzK6qq71bVg93yNmD/JIeyBueTfR+XU5nLJPszCoaPVtUnl+gy3PE5jQspiy6YrGN0MeRYfnqh6cRFfd7Kz16Q/ni3fCI/e0F6F5O7IL2aOp/J6KLZhkXthwAHdsuHAl9jchfTVlPn4WPLrwSuq59epPp6V+8h3fITZ1Vn1+94Rhf5Mov57MY4huUvoP4+P3vB78vTnstV1nk0o2tyz1vUfhBw8NjytcBpM6zzsId/14z+Yf2vbm5XdbxMo8Zu++MZXZc4aFZz2c3LRcA/7qPPYMfnxA6IFX7IjYyutN/F6OmuAO9m9H/fAI8B/qU7uL8MHDf22vO6190JnD7jOq8EvgVs7762du3PA27tDuhbgTfOuM6/BXZ09VwNHD/22jd087wTeP0s6+zW/wZ4z6LXTW0+Gf2f4T3A/zF6X/aNwJuBN3fbw+iPV93V1TI3o7lcqc4PAd8ZOzbnu/bjunm8uTsmzptxneeMHZvXMRZmSx0vs6ix63M2o5thxl837bl8AaNrHLeM/V43Tur49PEZkqSGn5CWJDUMB0lSw3CQJDUMB0lSw3CQJDUMB0lSw3CQJDX+H8x0906IBj16AAAAAElFTkSuQmCC\n", "text/plain": [ "
" ] }, "metadata": { "needs_background": "light" }, "output_type": "display_data" } ], "source": [ "%matplotlib inline\n", "\n", "import numpy as np\n", "import matplotlib.pyplot as plt\n", "\n", "from matplotlib import animation, rc\n", "from IPython.display import HTML\n", "\n", "\n", "# First set up the figure, the axis, and the plot element we want to animate\n", "fig, ax = plt.subplots()\n", "\n", "ax.set_xlim(( 0, 2))\n", "ax.set_ylim((-2, 2))\n", "\n", "line, = ax.plot([], [], lw=2)\n", "\n", "\n", "\n" ] }, { "cell_type": "code", "execution_count": 2, "metadata": {}, "outputs": [ { "data": { "text/html": [ "" ], "text/plain": [ "" ] }, "execution_count": 2, "metadata": {}, "output_type": "execute_result" } ], "source": [ "\n", "# initialization function: plot the background of each frame\n", "def init():\n", " line.set_data([], [])\n", " return (line,)\n", "\n", "# animation function. This is called sequentially\n", "def animate(i):\n", " x = np.linspace(0, 2, 1000)\n", " y = np.sin(2 * np.pi * (x - 0.01 * i))\n", " line.set_data(x, y)\n", " return (line,)\n", "\n", "# call the animator. blit=True means only re-draw the parts that have changed.\n", "anim = animation.FuncAnimation(fig, animate, init_func=init,\n", " frames=100, interval=20, blit=True)\n", "\n", "HTML(anim.to_html5_video())" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Method 2" ] }, { "cell_type": "code", "execution_count": 4, "metadata": {}, "outputs": [ { "data": { "application/javascript": [ "/* Put everything inside the global mpl namespace */\n", "window.mpl = {};\n", "\n", "\n", "mpl.get_websocket_type = function() {\n", " if (typeof(WebSocket) !== 'undefined') {\n", " return WebSocket;\n", " } else if (typeof(MozWebSocket) !== 'undefined') {\n", " return MozWebSocket;\n", " } else {\n", " alert('Your browser does not have WebSocket support.' +\n", " 'Please try Chrome, Safari or Firefox ≥ 6. ' +\n", " 'Firefox 4 and 5 are also supported but you ' +\n", " 'have to enable WebSockets in about:config.');\n", " };\n", "}\n", "\n", "mpl.figure = function(figure_id, websocket, ondownload, parent_element) {\n", " this.id = figure_id;\n", "\n", " this.ws = websocket;\n", "\n", " this.supports_binary = (this.ws.binaryType != undefined);\n", "\n", " if (!this.supports_binary) {\n", " var warnings = document.getElementById(\"mpl-warnings\");\n", " if (warnings) {\n", " warnings.style.display = 'block';\n", " warnings.textContent = (\n", " \"This browser does not support binary websocket messages. \" +\n", " \"Performance may be slow.\");\n", " }\n", " }\n", "\n", " this.imageObj = new Image();\n", "\n", " this.context = undefined;\n", " this.message = undefined;\n", " this.canvas = undefined;\n", " this.rubberband_canvas = undefined;\n", " this.rubberband_context = undefined;\n", " this.format_dropdown = undefined;\n", "\n", " this.image_mode = 'full';\n", "\n", " this.root = $('
');\n", " this._root_extra_style(this.root)\n", " this.root.attr('style', 'display: inline-block');\n", "\n", " $(parent_element).append(this.root);\n", "\n", " this._init_header(this);\n", " this._init_canvas(this);\n", " this._init_toolbar(this);\n", "\n", " var fig = this;\n", "\n", " this.waiting = false;\n", "\n", " this.ws.onopen = function () {\n", " fig.send_message(\"supports_binary\", {value: fig.supports_binary});\n", " fig.send_message(\"send_image_mode\", {});\n", " if (mpl.ratio != 1) {\n", " fig.send_message(\"set_dpi_ratio\", {'dpi_ratio': mpl.ratio});\n", " }\n", " fig.send_message(\"refresh\", {});\n", " }\n", "\n", " this.imageObj.onload = function() {\n", " if (fig.image_mode == 'full') {\n", " // Full images could contain transparency (where diff images\n", " // almost always do), so we need to clear the canvas so that\n", " // there is no ghosting.\n", " fig.context.clearRect(0, 0, fig.canvas.width, fig.canvas.height);\n", " }\n", " fig.context.drawImage(fig.imageObj, 0, 0);\n", " };\n", "\n", " this.imageObj.onunload = function() {\n", " fig.ws.close();\n", " }\n", "\n", " this.ws.onmessage = this._make_on_message_function(this);\n", "\n", " this.ondownload = ondownload;\n", "}\n", "\n", "mpl.figure.prototype._init_header = function() {\n", " var titlebar = $(\n", " '
');\n", " var titletext = $(\n", " '
');\n", " titlebar.append(titletext)\n", " this.root.append(titlebar);\n", " this.header = titletext[0];\n", "}\n", "\n", "\n", "\n", "mpl.figure.prototype._canvas_extra_style = function(canvas_div) {\n", "\n", "}\n", "\n", "\n", "mpl.figure.prototype._root_extra_style = function(canvas_div) {\n", "\n", "}\n", "\n", "mpl.figure.prototype._init_canvas = function() {\n", " var fig = this;\n", "\n", " var canvas_div = $('
');\n", "\n", " canvas_div.attr('style', 'position: relative; clear: both; outline: 0');\n", "\n", " function canvas_keyboard_event(event) {\n", " return fig.key_event(event, event['data']);\n", " }\n", "\n", " canvas_div.keydown('key_press', canvas_keyboard_event);\n", " canvas_div.keyup('key_release', canvas_keyboard_event);\n", " this.canvas_div = canvas_div\n", " this._canvas_extra_style(canvas_div)\n", " this.root.append(canvas_div);\n", "\n", " var canvas = $('');\n", " canvas.addClass('mpl-canvas');\n", " canvas.attr('style', \"left: 0; top: 0; z-index: 0; outline: 0\")\n", "\n", " this.canvas = canvas[0];\n", " this.context = canvas[0].getContext(\"2d\");\n", "\n", " var backingStore = this.context.backingStorePixelRatio ||\n", "\tthis.context.webkitBackingStorePixelRatio ||\n", "\tthis.context.mozBackingStorePixelRatio ||\n", "\tthis.context.msBackingStorePixelRatio ||\n", "\tthis.context.oBackingStorePixelRatio ||\n", "\tthis.context.backingStorePixelRatio || 1;\n", "\n", " mpl.ratio = (window.devicePixelRatio || 1) / backingStore;\n", "\n", " var rubberband = $('');\n", " rubberband.attr('style', \"position: absolute; left: 0; top: 0; z-index: 1;\")\n", "\n", " var pass_mouse_events = true;\n", "\n", " canvas_div.resizable({\n", " start: function(event, ui) {\n", " pass_mouse_events = false;\n", " },\n", " resize: function(event, ui) {\n", " fig.request_resize(ui.size.width, ui.size.height);\n", " },\n", " stop: function(event, ui) {\n", " pass_mouse_events = true;\n", " fig.request_resize(ui.size.width, ui.size.height);\n", " },\n", " });\n", "\n", " function mouse_event_fn(event) {\n", " if (pass_mouse_events)\n", " return fig.mouse_event(event, event['data']);\n", " }\n", "\n", " rubberband.mousedown('button_press', mouse_event_fn);\n", " rubberband.mouseup('button_release', mouse_event_fn);\n", " // Throttle sequential mouse events to 1 every 20ms.\n", " rubberband.mousemove('motion_notify', mouse_event_fn);\n", "\n", " rubberband.mouseenter('figure_enter', mouse_event_fn);\n", " rubberband.mouseleave('figure_leave', mouse_event_fn);\n", "\n", " canvas_div.on(\"wheel\", function (event) {\n", " event = event.originalEvent;\n", " event['data'] = 'scroll'\n", " if (event.deltaY < 0) {\n", " event.step = 1;\n", " } else {\n", " event.step = -1;\n", " }\n", " mouse_event_fn(event);\n", " });\n", "\n", " canvas_div.append(canvas);\n", " canvas_div.append(rubberband);\n", "\n", " this.rubberband = rubberband;\n", " this.rubberband_canvas = rubberband[0];\n", " this.rubberband_context = rubberband[0].getContext(\"2d\");\n", " this.rubberband_context.strokeStyle = \"#000000\";\n", "\n", " this._resize_canvas = function(width, height) {\n", " // Keep the size of the canvas, canvas container, and rubber band\n", " // canvas in synch.\n", " canvas_div.css('width', width)\n", " canvas_div.css('height', height)\n", "\n", " canvas.attr('width', width * mpl.ratio);\n", " canvas.attr('height', height * mpl.ratio);\n", " canvas.attr('style', 'width: ' + width + 'px; height: ' + height + 'px;');\n", "\n", " rubberband.attr('width', width);\n", " rubberband.attr('height', height);\n", " }\n", "\n", " // Set the figure to an initial 600x600px, this will subsequently be updated\n", " // upon first draw.\n", " this._resize_canvas(600, 600);\n", "\n", " // Disable right mouse context menu.\n", " $(this.rubberband_canvas).bind(\"contextmenu\",function(e){\n", " return false;\n", " });\n", "\n", " function set_focus () {\n", " canvas.focus();\n", " canvas_div.focus();\n", " }\n", "\n", " window.setTimeout(set_focus, 100);\n", "}\n", "\n", "mpl.figure.prototype._init_toolbar = function() {\n", " var fig = this;\n", "\n", " var nav_element = $('
')\n", " nav_element.attr('style', 'width: 100%');\n", " this.root.append(nav_element);\n", "\n", " // Define a callback function for later on.\n", " function toolbar_event(event) {\n", " return fig.toolbar_button_onclick(event['data']);\n", " }\n", " function toolbar_mouse_event(event) {\n", " return fig.toolbar_button_onmouseover(event['data']);\n", " }\n", "\n", " for(var toolbar_ind in mpl.toolbar_items) {\n", " var name = mpl.toolbar_items[toolbar_ind][0];\n", " var tooltip = mpl.toolbar_items[toolbar_ind][1];\n", " var image = mpl.toolbar_items[toolbar_ind][2];\n", " var method_name = mpl.toolbar_items[toolbar_ind][3];\n", "\n", " if (!name) {\n", " // put a spacer in here.\n", " continue;\n", " }\n", " var button = $('