add example additive

demo/additive_voxels.ipynb

@@ -0,0 +1,64 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from ipyniivue_experimental import AnyNiivue, SliceType\n",
+    "# based on https://niivue.github.io/niivue/features/additive.voxels.html\n",
+    "\n",
+    "volumes = [\n",
+    "        { \"path\": \"../images/mni152.nii.gz\" },\n",
+    "        {\n",
+    "          \"path\": \"../images/narps-4965_9U7M-hypo1_unthresh.nii.gz\",\n",
+    "          \"colormap\": \"red\",\n",
+    "          \"cal_min\": 2,\n",
+    "          \"cal_max\": 4,\n",
+    "        },\n",
+    "        {\n",
+    "          \"path\": \"../images/narps-4735_50GV-hypo1_unthresh.nii.gz\",\n",
+    "          \"colormap\": \"green\",\n",
+    "          \"cal_min\": 2,\n",
+    "          \"cal_max\": 4,\n",
+    "        },\n",
+    "      ]\n",
+    "nv = AnyNiivue()\n",
+    "nv.load_volumes(volumes)\n",
+    "nv"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "nv.volumes[0].colorbarVisible = False\n",
+    "nv.volumes[1].cal_min = 1"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": ".venv",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.7"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}