61 cartoee scalebar

In [ ]:

import ee
import geemap
from geemap import cartoee
import matplotlib.pyplot as plt

import ee import geemap from geemap import cartoee import matplotlib.pyplot as plt

In [ ]:

geemap.ee_initialize()

geemap.ee_initialize()

In [ ]:

# Get image
lon = -115.1585
lat = 36.1500
start_year = 1984
end_year = 2011

point = ee.Geometry.Point(lon, lat)
years = ee.List.sequence(start_year, end_year)


def get_best_image(year):
    start_date = ee.Date.fromYMD(year, 1, 1)
    end_date = ee.Date.fromYMD(year, 12, 31)
    image = (
        ee.ImageCollection("LANDSAT/LT05/C01/T1_SR")
        .filterBounds(point)
        .filterDate(start_date, end_date)
        .sort("CLOUD_COVER")
        .first()
    )
    return ee.Image(image)


collection = ee.ImageCollection(years.map(get_best_image))


vis_params = {"bands": ['B4', 'B3', 'B2'], "min": 0, "max": 5000}

image = ee.Image(collection.first())

# Get image lon = -115.1585 lat = 36.1500 start_year = 1984 end_year = 2011 point = ee.Geometry.Point(lon, lat) years = ee.List.sequence(start_year, end_year) def get_best_image(year): start_date = ee.Date.fromYMD(year, 1, 1) end_date = ee.Date.fromYMD(year, 12, 31) image = ( ee.ImageCollection("LANDSAT/LT05/C01/T1_SR") .filterBounds(point) .filterDate(start_date, end_date) .sort("CLOUD_COVER") .first() ) return ee.Image(image) collection = ee.ImageCollection(years.map(get_best_image)) vis_params = {"bands": ['B4', 'B3', 'B2'], "min": 0, "max": 5000} image = ee.Image(collection.first())

In [ ]:

w = 0.4
h = 0.3

region = [lon + w, lat - h, lon - w, lat + h]

fig = plt.figure(figsize=(10, 8))

# use cartoee to get a map
ax = cartoee.get_map(image, region=region, vis_params=vis_params)

# add gridlines to the map at a specified interval
cartoee.add_gridlines(ax, interval=[0.2, 0.2], linestyle=":")

# add north arrow
north_arrow_dict = {
    "text": "N",
    "xy": (0.10, 0.36),
    "arrow_length": 0.15,
    "text_color": "white",
    "arrow_color": "white",
    "fontsize": 20,
    "width": 5,
    "headwidth": 15,
    "ha": "center",
    "va": "center",
}
cartoee.add_north_arrow(ax, **north_arrow_dict)

# add scale bar
scale_bar_dict = {
    'metric_distance': 4,
    'unit': "km",
    'at_x': (0.05, 0.2),
    'at_y': (0.08, 0.11),
    'max_stripes': 5,
    'ytick_label_margins': 0.25,
    'fontsize': 8,
    'font_weight': "bold",
    'rotation': 0,
    'zorder': 999,
    'paddings': {"xmin": 0.05, "xmax": 0.05, "ymin": 1.5, "ymax": 0.5},
}

cartoee.add_scale_bar(ax, **scale_bar_dict)

ax.set_title(label='Las Vegas, NV', fontsize=15)
plt.show()

w = 0.4 h = 0.3 region = [lon + w, lat - h, lon - w, lat + h] fig = plt.figure(figsize=(10, 8)) # use cartoee to get a map ax = cartoee.get_map(image, region=region, vis_params=vis_params) # add gridlines to the map at a specified interval cartoee.add_gridlines(ax, interval=[0.2, 0.2], linestyle=":") # add north arrow north_arrow_dict = { "text": "N", "xy": (0.10, 0.36), "arrow_length": 0.15, "text_color": "white", "arrow_color": "white", "fontsize": 20, "width": 5, "headwidth": 15, "ha": "center", "va": "center", } cartoee.add_north_arrow(ax, **north_arrow_dict) # add scale bar scale_bar_dict = { 'metric_distance': 4, 'unit': "km", 'at_x': (0.05, 0.2), 'at_y': (0.08, 0.11), 'max_stripes': 5, 'ytick_label_margins': 0.25, 'fontsize': 8, 'font_weight': "bold", 'rotation': 0, 'zorder': 999, 'paddings': {"xmin": 0.05, "xmax": 0.05, "ymin": 1.5, "ymax": 0.5}, } cartoee.add_scale_bar(ax, **scale_bar_dict) ax.set_title(label='Las Vegas, NV', fontsize=15) plt.show()

---

Last update: 2023-03-27
Created: 2021-02-21