#709 fix some more examples

Author: valentinsulzer

examples/notebooks/change-input-current.ipynb

@@ -22,7 +22,7 @@
     "\n",
     "In this notebook we will use the SPM as the example model, and change the input current from the default option. If you are not familiar with running a model in PyBaMM, please see [this](./models/SPM.ipynb) notebook for more details.\n",
     "\n",
-    "In PyBaMM, the current function is set using the parameter \"Current function [A]\". Below we load the SPM with the default parameters, and then change the the current function to 16A."
+    "In PyBaMM, the current function is set using the parameter \"Current function [A]\". Below we load the SPM with the default parameters, and then change the the current function to be an input parameter, so that we can change it easily later."
    ]
   },
   {
@@ -45,15 +45,18 @@
     "# set the default model parameters\n",
     "param = model.default_parameter_values\n",
     "\n",
-    "# change the current function\n",
-    "param[\"Current function [A]\"] = 16"
+    "# change the current function to be an input parameter\n",
+    "def current_function(t):\n",
+    "    return pybamm.InputParameter(\"current\")\n",
+    "\n",
+    "param[\"Current function [A]\"] = current_function"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We can now solve the model in the ususal way"
+    "We can now solve the model in the ususal way, with a 16A current"
    ]
   },
   {
@@ -66,12 +69,12 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "000da8e81b0b4e91984553ba15ba179c",
+       "model_id": "839ef921550749ecaae748a2068ee9cc",
        "version_major": 2,
        "version_minor": 0
       },
       "text/plain": [
-       "interactive(children=(FloatSlider(value=0.0, description='t', max=0.0036363636363636364, step=0.005), Output()…"
+       "interactive(children=(FloatSlider(value=0.0, description='t', max=0.003612040133779264, step=0.005), Output())…"
       ]
      },
      "metadata": {},
@@ -92,9 +95,9 @@
     "\n",
     "# Solve the model at the given time points\n",
     "solver = model.default_solver\n",
-    "n = 100\n",
+    "n = 300\n",
     "t_eval = np.linspace(0, 0.02, n)\n",
-    "solution = solver.solve(model, t_eval)\n",
+    "solution = solver.solve(model, t_eval, inputs={\"current\": 16})\n",
     "\n",
     "# plot\n",
     "quick_plot = pybamm.QuickPlot(solution)\n",
@@ -114,27 +117,11 @@
    "cell_type": "code",
    "execution_count": 3,
    "metadata": {},
-   "outputs": [],
-   "source": [
-    "param[\"Current function [A]\"] = 0"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "The model may then be updated and solved again in the usual way."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "cc4fd2e7c9ea4129a7acf0e519fea268",
+       "model_id": "cfb285a7877c4853ae7144891b38e4cd",
        "version_major": 2,
        "version_minor": 0
       },
@@ -147,11 +134,8 @@
     }
    ],
    "source": [
-    "# set the parameters for the model and the geometry\n",
-    "param.update_model(model, disc)\n",
-    "\n",
     "# Solve the model at the given time points\n",
-    "solution = solver.solve(model, t_eval)\n",
+    "solution = solver.solve(model, t_eval, inputs={\"current\": 0})\n",
     "\n",
     "# plot\n",
     "quick_plot = pybamm.QuickPlot(solution)\n",
@@ -171,13 +155,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "84f6cac9b14f43a1907322e650f3c9f8",
+       "model_id": "d31307d03a2b4082a5ad7b4d91f85823",
        "version_major": 2,
        "version_minor": 0
       },
@@ -242,7 +226,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -264,7 +248,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -295,13 +279,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "09ced8a9e10b4e769a9b4cc8573b7fa2",
+       "model_id": "bb1a66bff842443cb81abb44a4b4a6a1",
        "version_major": 2,
        "version_minor": 0
       },
@@ -366,4 +350,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}