{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Morphing: apply a local deformation of field"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:29.677620Z",
     "iopub.status.busy": "2025-01-13T11:34:29.677142Z",
     "iopub.status.idle": "2025-01-13T11:34:30.210049Z",
     "shell.execute_reply": "2025-01-13T11:34:30.209543Z"
    }
   },
   "outputs": [],
   "source": [
    "%matplotlib inline\n",
    "# for figures in notebook\n",
    "\n",
    "# import & initialize epygram\n",
    "import epygram\n",
    "epygram.init_env()\n",
    "\n",
    "import os\n",
    "INPUTS_DIR = os.path.join('..', 'inputs')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:30.212271Z",
     "iopub.status.busy": "2025-01-13T11:34:30.212061Z",
     "iopub.status.idle": "2025-01-13T11:34:30.411313Z",
     "shell.execute_reply": "2025-01-13T11:34:30.410755Z"
    }
   },
   "outputs": [],
   "source": [
    "r = epygram.open(os.path.join(INPUTS_DIR, 'ICMSHAROM+0022'), 'r')\n",
    "f = r.readfield('SURFTEMPERATURE')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:30.413465Z",
     "iopub.status.busy": "2025-01-13T11:34:30.413265Z",
     "iopub.status.idle": "2025-01-13T11:34:30.950205Z",
     "shell.execute_reply": "2025-01-13T11:34:30.949866Z"
    }
   },
   "outputs": [],
   "source": [
    "fig, ax = f.cartoplot(subzone='CI')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:30.953250Z",
     "iopub.status.busy": "2025-01-13T11:34:30.952937Z",
     "iopub.status.idle": "2025-01-13T11:34:30.957789Z",
     "shell.execute_reply": "2025-01-13T11:34:30.957407Z"
    }
   },
   "outputs": [],
   "source": [
    "# make 2 PointFields by extracting them from the field\n",
    "p1 = f.extract_point(8,45)\n",
    "p2 = f.extract_point(8.5, 45.5)\n",
    "print(p1.getdata(), p2.getdata())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:30.959650Z",
     "iopub.status.busy": "2025-01-13T11:34:30.959341Z",
     "iopub.status.idle": "2025-01-13T11:34:30.961573Z",
     "shell.execute_reply": "2025-01-13T11:34:30.961245Z"
    }
   },
   "outputs": [],
   "source": [
    "# set arbitrary different values\n",
    "p1.setdata(270)\n",
    "p2.setdata(285)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:30.963281Z",
     "iopub.status.busy": "2025-01-13T11:34:30.963138Z",
     "iopub.status.idle": "2025-01-13T11:34:35.756894Z",
     "shell.execute_reply": "2025-01-13T11:34:35.756391Z"
    }
   },
   "outputs": [],
   "source": [
    "f.morph_with_points([p1, p2], morphing='gaussian', sigma=10000)  # gaussian blending weight with 10km sigma"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:35.758967Z",
     "iopub.status.busy": "2025-01-13T11:34:35.758792Z",
     "iopub.status.idle": "2025-01-13T11:34:36.076695Z",
     "shell.execute_reply": "2025-01-13T11:34:36.076293Z"
    }
   },
   "outputs": [],
   "source": [
    "fig, ax = f.cartoplot(subzone='CI')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:36.079450Z",
     "iopub.status.busy": "2025-01-13T11:34:36.079261Z",
     "iopub.status.idle": "2025-01-13T11:34:38.504623Z",
     "shell.execute_reply": "2025-01-13T11:34:38.504171Z"
    }
   },
   "outputs": [],
   "source": [
    "# or as increment (less brutal):\n",
    "p = f.extract_point(7,46)\n",
    "p.setdata(+10)  # +10K increment\n",
    "f.morph_with_points([p], morphing='gaussian', sigma=10000, increment=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:34:38.506475Z",
     "iopub.status.busy": "2025-01-13T11:34:38.506274Z",
     "iopub.status.idle": "2025-01-13T11:34:38.821969Z",
     "shell.execute_reply": "2025-01-13T11:34:38.821486Z"
    }
   },
   "outputs": [],
   "source": [
    "fig, ax = f.cartoplot(subzone='CI')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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