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Sangesh Pv on 29 Sep 2023
Commented: Sangesh Pv on 30 Sep 2023
Accepted Answer: Dyuman Joshi
I am trying to add the output to a map but i can't figure out how to add it.
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Sangesh Pv on 29 Sep 2023
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https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2904444
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- subtowersutm.xlsx
data = readmatrix('subtowersutm.xlsx');
% Extract latitude, longitude, and RSRP values.
measurement_lat = data(:, 1);
measurement_lon = data(:, 2);
rsrp = data(:, 11); % Adjust the column index for RSRP data.
% Check if the dimensions of Lat and Lon match
if size(measurement_lat) ~= size(measurement_lon)
error('Latitude and Longitude dimensions do not match.');
end
% Define the UTM zone for your area.
utm_zone = 32;
% Step 2: Transform Coordinates using the built-in 'deg2utm' function
[utm_x, utm_y, utm_zone] = deg2utm(measurement_lat, measurement_lon);
Unrecognized function or variable 'deg2utm'.
% Define the pixel size and create the grid
pixel_size = 20; % Adjust as needed
x_grid = min(utm_x):pixel_size:max(utm_x);
y_grid = min(utm_y):pixel_size:max(utm_y);
% Step 3: Calculate average RSRP for each pixel
num_pixels_x = numel(x_grid) - 1;
num_pixels_y = numel(y_grid) - 1;
average_rsrp = zeros(num_pixels_y, num_pixels_x); % Initialize the grid.
for i = 1:num_pixels_x
for j = 1:num_pixels_y
% Define the current pixel polygon.
polygon_x = [x_grid(i), x_grid(i + 1), x_grid(i + 1), x_grid(i)];
polygon_y = [y_grid(j), y_grid(j), y_grid(j + 1), y_grid(j + 1)];
% Check if measurements fall within the current pixel.
in_polygon = inpolygon(utm_x, utm_y, polygon_x, polygon_y);
% Calculate average RSRP for the measurements within the polygon.
if any(in_polygon)
rsrp_values_in_polygon = rsrp(in_polygon); % Replace with your RSRP data.
% Convert dBm to watts, compute average, and convert back to dBm.
rsrp_watts = 10 .^ (rsrp_values_in_polygon / 10);
average_rsrp(j, i) = 10 * log10(mean(rsrp_watts));
end
end
end
% Step 4: Plot the heatmap of average RSRP
% You can use various plotting functions to visualize the heatmap.
heatmap(x_grid(1:end-1), y_grid(1:end-1), average_rsrp);
colorbar;
xlabel('UTM X');
ylabel('UTM Y');
title('Average RSRP Heatmap');
Dyuman Joshi on 29 Sep 2023
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"% Step 2: Transform Coordinates using the built-in 'deg2utm' function"
which -all deg2utm
'deg2utm' not found.
There is no built-in function named deg2utm, as you can see above.
Which function were you trying to use?
Sangesh Pv on 29 Sep 2023
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https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2904669
Edited: Voss on 29 Sep 2023
i used this script to use deg 2 utm
[Voss EDIT: code from File Exchange removed. Link is: https://www.mathworks.com/matlabcentral/fileexchange/10915-deg2utm]
Dyuman Joshi on 29 Sep 2023
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Open in MATLAB Online
- subtowersutm.xlsx
What's the problem here?
What do you want to obtain? Can you provide an example as to what the expected output should be?
data = readmatrix('subtowersutm.xlsx');
% Extract latitude, longitude, and RSRP values.
measurement_lat = data(:, 1);
measurement_lon = data(:, 2);
rsrp = data(:, 11); % Adjust the column index for RSRP data.
% Check if the dimensions of Lat and Lon match
if size(measurement_lat) ~= size(measurement_lon)
error('Latitude and Longitude dimensions do not match.');
end
% Define the UTM zone for your area.
utm_zone = 32;
% Step 2: Transform Coordinates using the built-in 'deg2utm' function
[utm_x, utm_y, utm_zone] = deg2utm(measurement_lat, measurement_lon);
% Define the pixel size and create the grid
pixel_size = 20; % Adjust as needed
x_grid = min(utm_x):pixel_size:max(utm_x);
y_grid = min(utm_y):pixel_size:max(utm_y);
% Step 3: Calculate average RSRP for each pixel
num_pixels_x = numel(x_grid) - 1;
num_pixels_y = numel(y_grid) - 1;
average_rsrp = zeros(num_pixels_y, num_pixels_x); % Initialize the grid.
for i = 1:num_pixels_x
for j = 1:num_pixels_y
% Define the current pixel polygon.
polygon_x = [x_grid(i), x_grid(i + 1), x_grid(i + 1), x_grid(i)];
polygon_y = [y_grid(j), y_grid(j), y_grid(j + 1), y_grid(j + 1)];
% Check if measurements fall within the current pixel.
in_polygon = inpolygon(utm_x, utm_y, polygon_x, polygon_y);
% Calculate average RSRP for the measurements within the polygon.
if any(in_polygon)
rsrp_values_in_polygon = rsrp(in_polygon); % Replace with your RSRP data.
% Convert dBm to watts, compute average, and convert back to dBm.
rsrp_watts = 10 .^ (rsrp_values_in_polygon / 10);
average_rsrp(j, i) = 10 * log10(mean(rsrp_watts));
end
end
end
% Step 4: Plot the heatmap of average RSRP
% You can use various plotting functions to visualize the heatmap.
heatmap(x_grid(1:end-1), y_grid(1:end-1), average_rsrp);
colorbar;
xlabel('UTM X');
ylabel('UTM Y');
title('Average RSRP Heatmap');
Sangesh Pv on 29 Sep 2023
Direct link to this comment
https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2904774
- Need.png
- needed.png
i need the output to be colored like the picture need.png below when I mention the color below in the code it doesn't change and I need it on top of a Map like the picture needed.png
Walter Roberson on 29 Sep 2023
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https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2904779
deg2utm appears to be from https://www.mathworks.com/matlabcentral/fileexchange/10915-deg2utm
Sangesh Pv on 29 Sep 2023
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https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2904784
Open in MATLAB Online
% Load your data
data = readmatrix('subtowersutm.xlsx');
% Extract latitude, longitude, and RSRP values.
measurement_lat = data(:, 1);
measurement_lon = data(:, 2);
rsrp = data(:, 11); % Adjust the column index for RSRP data.
% Check if the dimensions of Lat and Lon match
if size(measurement_lat) ~= size(measurement_lon)
error('Latitude and Longitude dimensions do not match.');
end
% Define the UTM zone for your area.
utm_zone = 32;
% Step 2: Transform Coordinates using the built-in 'deg2utm' function
[utm_x, utm_y, utm_zone] = deg2utm(measurement_lat, measurement_lon);
% Define the pixel size and create the grid
pixel_size = 20; % Adjust as needed
x_grid = min(utm_x):pixel_size:max(utm_x);
y_grid = min(utm_y):pixel_size:max(utm_y);
% Step 3: Calculate average RSRP for each pixel
num_pixels_x = numel(x_grid) - 1;
num_pixels_y = numel(y_grid) - 1;
average_rsrp = zeros(num_pixels_y, num_pixels_x); % Initialize the grid.
for i = 1:num_pixels_x
for j = 1:num_pixels_y
% Define the current pixel polygon.
polygon_x = [x_grid(i), x_grid(i + 1), x_grid(i + 1), x_grid(i)];
polygon_y = [y_grid(j), y_grid(j), y_grid(j + 1), y_grid(j + 1)];
% Check if measurements fall within the current pixel.
in_polygon = inpolygon(utm_x, utm_y, polygon_x, polygon_y);
% Calculate average RSRP for the measurements within the polygon.
if any(in_polygon)
rsrp_values_in_polygon = rsrp(in_polygon); % Replace with your RSRP data.
% Convert dBm to watts, compute average, and convert back to dBm.
rsrp_watts = 10 .^ (rsrp_values_in_polygon / 10);
average_rsrp(j, i) = 10 * log10(mean(rsrp_watts));
end
end
end
% Exclude cells with 0 value from the heatmap
average_rsrp(average_rsrp == 0) = NaN;
% Define the color for NaN values (white)
nanColor = [1, 1, 1]; % RGB color for white
% Plot the heatmap of average RSRP with NaN values represented as white
colormap('hot'); % Use the 'hot' colormap for heat colors
heatmap(x_grid(1:end-1), y_grid(1:end-1), average_rsrp, ...
'MissingDataColor', nanColor); % Set the MissingDataColor property
colorbar;
xlabel('UTM X');
ylabel('UTM Y');
title('Average RSRP Heatmap (Excluding 0 Values)');
% updated code
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Accepted Answer
Dyuman Joshi on 30 Sep 2023
Open in MATLAB Online
- deg2utm.m
- subtowersutm.xlsx
When using heatmap, colormap has to be specified in the call. See below -
% Load your data
data = readmatrix('subtowersutm.xlsx');
% Extract latitude, longitude, and RSRP values.
measurement_lat = data(:, 1);
measurement_lon = data(:, 2);
rsrp = data(:, 11); % Adjust the column index for RSRP data.
% Check if the dimensions of Lat and Lon match
if size(measurement_lat) ~= size(measurement_lon)
error('Latitude and Longitude dimensions do not match.');
end
% Define the UTM zone for your area.
utm_zone = 32;
% Step 2: Transform Coordinates using the built-in 'deg2utm' function
[utm_x, utm_y, utm_zone] = deg2utm(measurement_lat, measurement_lon);
% Define the pixel size and create the grid
pixel_size = 20; % Adjust as needed
x_grid = min(utm_x):pixel_size:max(utm_x);
y_grid = min(utm_y):pixel_size:max(utm_y);
% Step 3: Calculate average RSRP for each pixel
num_pixels_x = numel(x_grid) - 1;
num_pixels_y = numel(y_grid) - 1;
average_rsrp = zeros(num_pixels_y, num_pixels_x); % Initialize the grid.
for i = 1:num_pixels_x
for j = 1:num_pixels_y
% Define the current pixel polygon.
polygon_x = [x_grid(i), x_grid(i + 1), x_grid(i + 1), x_grid(i)];
polygon_y = [y_grid(j), y_grid(j), y_grid(j + 1), y_grid(j + 1)];
% Check if measurements fall within the current pixel.
in_polygon = inpolygon(utm_x, utm_y, polygon_x, polygon_y);
% Calculate average RSRP for the measurements within the polygon.
if any(in_polygon)
rsrp_values_in_polygon = rsrp(in_polygon); % Replace with your RSRP data.
% Convert dBm to watts, compute average, and convert back to dBm.
rsrp_watts = 10 .^ (rsrp_values_in_polygon / 10);
average_rsrp(j, i) = 10 * log10(mean(rsrp_watts));
end
end
end
% Exclude cells with 0 value from the heatmap
average_rsrp(average_rsrp == 0) = NaN;
% Define the color for NaN values (white)
nanColor = [1, 1, 1]; % RGB color for white
Colormap specified inside the heatmap() call.
% Plot the heatmap of average RSRP with NaN values represented as white
% Set the MissingDataColor property and the colormap
heatmap(x_grid(1:end-1), y_grid(1:end-1), average_rsrp, ...
'MissingDataColor', nanColor, Colormap=hot);
%% ^^^^^^^^^^^^
colorbar;
xlabel('UTM X');
ylabel('UTM Y');
title('Average RSRP Heatmap (Excluding 0 Values)');
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Sangesh Pv on 30 Sep 2023
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perfect and how can i get this output on an map ?
Dyuman Joshi on 30 Sep 2023
Direct link to this comment
https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2905454
Which map are you trying to plot? Could you attach the code for it?
Sangesh Pv on 30 Sep 2023
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https://support.mathworks.com/matlabcentral/answers/2027249-how-to-add-map-to-an-output#comment_2905474
Open in MATLAB Online
% Create a web map using the Mapping Toolbox
webmap;
% Display the map using a web map service (you may need an internet connection)
basemap = wmsfind('nasa', 'SearchField', 'serverurl');
wmslayer = wmsinfo(basemap(1).ServerURL);
layers = wmslayer(1).LayerName;
addWebMap(webmap, layers);
% I tried with this code but it gives as 2 seperate output i dont think so it works, do you think it will be better to convert this utm coordinates back to lat lon so that geoscatter or geoshow command can be used ?
% I just need it to be on top of the streets which the data has been taken with and not a white background in the grided view
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