Page History

#Metview Macro

#  **************************** LICENSE START ***********************************
# 
#  Copyright 2019 ECMWF. This software is distributed under the terms
#  of the Apache License version 2.0. In applying this license, ECMWF does not
#  waive the privileges and immunities granted to it by virtue of its status as
#  an Intergovernmental Organization or submit itself to any jurisdiction.
# 
#  ***************************** LICENSE END ************************************
# 

# read pressure level data - superstorm Sandy
g  = read("sandy_pl.grib")

# read wind fields and z500
f_uv = read(data:g , param: ["u","v"])
f_z = read(data:g , param: "z", levelist: 500)

# ---------------------------
# Cross section
# ----------------------------

# define cross section line
line = [30.30,-79.83,36.95,-63.92]

# define cross section view wind projected to the cross section plane
xs = mxsectview(
    bottom_level       : 1000,
    top_level          : 100,
    line               : line,
    wind_parallel      : "on",
    wind_perpendicular : "off",
    wind_intenistyintensity     : "off",
    vertical_scaling   : "log"
    )

# define contour shading for normal wind component
wind_shade = mcont(
    legend                       : "on",
    contour                      : "off",
    contour_level_selection_type : "interval",
    contour_shade_max_level      : 32,
    contour_shade_min_level      : -32,
    contour_interval             : 4,
    contour_label                : "off",
    contour_shade                : "on",
    contour_shade_colour_method  : "palette",
    contour_shade_method         : "area_fill",
    contour_shade_palette_name   : "m_brown_purple_16"
    )

# ---------------------------------------------
#  Map view with z500 and cross section line
# ---------------------------------------------

# define coastlines
coast = mcoast(
    map_coastline_colour            : "RGB(0.4449,0.4414,0.4414)",
    map_coastline_resolution        : "low",
    map_coastline_land_shade        : "on",
    map_coastline_land_shade_colour : "RGB(0.5333,0.5333,0.5333)",
    map_coastline_sea_shade         : "on",
    map_coastline_sea_shade_colour  : "RGB(0.7765,0.8177,0.8941)",
    map_boundaries                  : "on",
    map_boundaries_colour           : "mustard",
    map_boundaries_thickness        : 2,
    map_grid_colour                 : "RGB(0.2627,0.2627,0.2627)",
    map_grid_latitude_increment     : 5,
    map_grid_longitude_increment     : 5
    )
    
# define map view
map = geoview(
    map_area_definition : "corners",
    area                : [25,-84,40,-60],
    coastlines          : coast,
    subpage_y_lenght : 75
    )

# define contoring for z500    
cont_z = mcont(
    contour_line_thickness  :   2,
    contour_line_colour :   "black",
    contour_highlight   :   "off",
    contour_level_selection_type    :   "interval",
    contour_interval    :   4,
    grib_scaling_of_derived_fields  :   "on"
    )

# plot title
map_title = mtext(text_lines : "Z 500 hpa")

# cross section line visualiser
vis_line = input_visualiser(
    input_plot_type        : "geo_points",
    input_longitude_values : [line[2],line[4]],
    input_latitude_values  : [line[1],line[3]]
    )

graph_line = mgraph(
    graph_line_colour    : "red",
    graph_line_thickness : 4
    )

# ---------------------------------------------
#  Define layout
# --------------------------------------------

map_page = plot_page(
    bottom: 30,
    view   : map
    )

xs_page = plot_page(
    top  : 30,
    view : xs
    )

dw = plot_superpage(
    pages : [map_page, xs_page]
    )

# ---------------------------------------------
#  Generate plot
# --------------------------------------------

# define the output plot file
setoutput(pdf_output(output_name : 'cross_section_wind_parallel'))

# generate plot
plot(dw[1], f_z, cont_z, vis_line, graph_line, map_title)
plot(dw[2], f_uv, wind_shade)

#  **************************** LICENSE START ***********************************
# 
#  Copyright 2019 ECMWF. This software is distributed under the terms
#  of the Apache License version 2.0. In applying this license, ECMWF does not
#  waive the privileges and immunities granted to it by virtue of its status as
#  an Intergovernmental Organization or submit itself to any jurisdiction.
# 
#  ***************************** LICENSE END ************************************
# 

import metview as mv

# read pressure level data - superstorm Sandy
g  = mv.read("sandy_pl.grib")

# read wind fields and z500
f_uv = mv.read(data=g , param=["u","v"])
f_z = mv.read(data=g , param="z", levelist=500)

# ---------------------------
# Cross section
# ----------------------------

# define cross section line
line = [30.30,-79.83,36.95,-63.92]

# define cross section view wind projected to the cross section plane
xs = mv.mxsectview(
    bottom_level       = 1000,
    top_level          = 100,
    line               = line,
    wind_parallel      = "on",
    wind_perpendicular = "off",
    wind_intenistyintensity     = "off",
    vertical_scaling   = "log"
    )

# define contour shading for normal wind component
wind_shade = mv.mcont(
    legend                       = "on",
    contour                      = "off",
    contour_level_selection_type = "interval",
    contour_shade_max_level      = 32,
    contour_shade_min_level      = -32,
    contour_interval             = 4,
    contour_label                = "off",
    contour_shade                = "on",
    contour_shade_colour_method  = "palette",
    contour_shade_method         = "area_fill",
    contour_shade_palette_name   = "m_brown_purple_16"
    )

# ---------------------------------------------
#  Map view with z500 and cross section line
# ---------------------------------------------

# define coastlines
coast = mv.mcoast(
    map_coastline_colour            = "RGB(0.4449,0.4414,0.4414)",
    map_coastline_resolution        = "low",
    map_coastline_land_shade        = "on",
    map_coastline_land_shade_colour = "RGB(0.5333,0.5333,0.5333)",
    map_coastline_sea_shade         = "on",
    map_coastline_sea_shade_colour  = "RGB(0.7765,0.8177,0.8941)",
    map_boundaries                  = "on",
    map_boundaries_colour           = "mustard",
    map_boundaries_thickness        = 2,
    map_grid_colour                 = "RGB(0.2627,0.2627,0.2627)",
    map_grid_latitude_increment     = 5,
    map_grid_longitude_increment     = 5
    )
    
# define map view
map = mv.geoview(
    map_area_definition = "corners",
    area                = [25,-84,40,-60],
    coastlines          = coast,
    subpage_y_lenght = 75
    )

# define contoring for z500    
cont_z = mv.mcont(
    contour_line_thickness  =   2,
    contour_line_colour =   "black",
    contour_highlight   =   "off",
    contour_level_selection_type    =   "interval",
    contour_interval    =   4,
    grib_scaling_of_derived_fields  =   "on"
    )

# plot title
map_title = mv.mtext(text_lines = "Z 500 hpa")

# cross section line visualiser
vis_line = mv.input_visualiser(
    input_plot_type        = "geo_points",
    input_longitude_values = [line[1],line[3]],
    input_latitude_values  = [line[0],line[2]]
    )

graph_line = mv.mgraph(
    graph_line_colour    = "red",
    graph_line_thickness = 4
    )

# ---------------------------------------------
#  Define layout
# --------------------------------------------

map_page = mv.plot_page(
    bottom= 30,
    view   = map
    )

xs_page = mv.plot_page(
    top  = 30,
    view = xs
    )

dw = mv.plot_superpage(
    pages = [map_page, xs_page]
    )

# ---------------------------------------------
#  Generate plot
# --------------------------------------------

# define the output plot file
mv.setoutput(mv.pdf_output(output_name = 'cross_section_wind_parallel'))

# generate plot
mv.plot(dw[0], f_z, cont_z, vis_line, graph_line, map_title,
        dw[1], f_uv, wind_shade)