{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Global lon/lat grids: shift center"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:30:35.694841Z",
     "iopub.status.busy": "2025-01-13T11:30:35.694334Z",
     "iopub.status.idle": "2025-01-13T11:30:36.218463Z",
     "shell.execute_reply": "2025-01-13T11:30:36.217894Z"
    }
   },
   "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": "2025-01-13T11:30:36.220744Z",
     "iopub.status.busy": "2025-01-13T11:30:36.220541Z",
     "iopub.status.idle": "2025-01-13T11:30:36.240304Z",
     "shell.execute_reply": "2025-01-13T11:30:36.239928Z"
    }
   },
   "outputs": [],
   "source": [
    "r = epygram.open(os.path.join(INPUTS_DIR, 'glob01.grib'), 'r')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:30:36.242011Z",
     "iopub.status.busy": "2025-01-13T11:30:36.241863Z",
     "iopub.status.idle": "2025-01-13T11:30:36.389578Z",
     "shell.execute_reply": "2025-01-13T11:30:36.389061Z"
    }
   },
   "outputs": [],
   "source": [
    "f = r.readfield('shortName:prmsl')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:30:36.391668Z",
     "iopub.status.busy": "2025-01-13T11:30:36.391500Z",
     "iopub.status.idle": "2025-01-13T11:30:47.359426Z",
     "shell.execute_reply": "2025-01-13T11:30:47.358997Z"
    }
   },
   "outputs": [],
   "source": [
    "fig, ax = f.cartoplot()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:30:47.363865Z",
     "iopub.status.busy": "2025-01-13T11:30:47.363716Z",
     "iopub.status.idle": "2025-01-13T11:30:57.971857Z",
     "shell.execute_reply": "2025-01-13T11:30:57.971369Z"
    }
   },
   "outputs": [],
   "source": [
    "f.global_shift_center(180)\n",
    "fig, ax = f.cartoplot()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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