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#Metview Macro

#  **************************** LICENSE START ***********************************
# 
#  Copyright 2020 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 ************************************
# 

# define the curves to be plotted
x = nil
y = nil
for i=-2 to 0.5 by 0.1 do
    x = x & [i]
    y = y & [exp(i)]
   
end for
y1 = 0.7*y
y2 = 1.3*y

# define area bounded by two curves (y1 and y2) 
vis_area = input_visualiser(
    input_plot_type: "xy_area",
    input_x_values: x,
    input_y_values: y1,
    input_x2_values: x,
    input_y2_values: y2
)

# define area style 
gr_area = mgraph(
    legend: "on",
    graph_type         : "area",
    graph_line_colour  : "lavender",
    graph_shade_colour : "RGB(0.6888,0.6888,0.8641)"
    )
    
# define curve
vis_curve = input_visualiser(
    input_x_values: x,
    input_y_values: y
)
  
# define curve style  
gr_curve = mgraph(
    legend: "on",
    graph_type         : "curve",
    graph_line_colour  : "coral",
    graph_line_thickness: 3
    )  
    
# define view
view = cartesianview(
    x_automatic : "on",
    y_min       : 0,
    y_max       : 1.5,
    subpage_clipping: "on"
    )
    
# define legend
legend = mlegend(
    legend_display_type     : "disjoint",
    legend_text_font_size   : 0.4,
    legend_text_composition : "user_text_only",
    legend_user_lines       : ["Area","Curve"]
    )

# define the output plot file
setoutput(pdf_output(output_name : 'fill_between_curves'))
 
# generate plot
plot(view, vis_area, gr_area, vis_curve, gr_curve, legend)

"""
Fill the area between two curves
"""

#  **************************** LICENSE START ***********************************
#
#  Copyright 2020 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
import numpy as np

# define the curves to be plotted
x = np.arange(-2, 0.6, 0.1).tolist()
y = np.exp(x)
y1 = y * 0.7
y2 = y * 1.3

# define area bounded by two curves (y1 and y2)
vis_area = mv.input_visualiser(
    input_plot_type="xy_area",
    input_x_values=x,
    input_y_values=y1,
    input_x2_values=x,
    input_y2_values=y2,
)

# define area style
gr_area = mv.mgraph(
    legend="on",
    graph_type="area",
    graph_line_colour="lavender",
    graph_shade_colour="RGB(0.6888,0.6888,0.8641)",
)

# define curve
vis_curve = mv.input_visualiser(input_x_values=x, input_y_values=y)

# define curve style
gr_curve = mv.mgraph(
    legend="on", graph_type="curve", graph_line_colour="coral", graph_line_thickness=3
)

# define view
view = mv.cartesianview(x_automatic="on", y_min=0, y_max=1.5, subpage_clipping="on")

# define legend
legend = mv.mlegend(
    legend_display_type="disjoint",
    legend_text_font_size=0.4,
    legend_text_composition="user_text_only",
    legend_user_lines=["Area", "Curve"],
)

# define the output plot file
mv.setoutput(mv.pdf_output(output_name="fill_between_curves"))

# generate plot
mv.plot(view, vis_area, gr_area, vis_curve, gr_curve, legend)