How to increase resolution from gshhs?

Dear all,
The code below allowed me to download and plot the coastline of UK. However, I would like to have a better resolution. When i change, in line 13 of the code below, ‘gshhs_c.b.gz’ for ‘gshhs_h.b.gz’ an error appeared (see below). So, How can I have the best coastal resolution of the area I an interested in? please can soemone help me?

Error using checkfilename>validateFilename (line 157)
Function GUNZIP was unable to find file ”gshhs_h.b.gz”.
Error in checkfilename (line 49)
[fullfilename, fid] = validateFilename( …
Error in gunzip>checkFilesURLInput (line 124)
[fullFileName, url] = checkfilename(inputFiles{1}, validExtensions, fcnName, …
Error in gunzip (line 63)
[files, url, urlFilename] = checkFilesURLInput(files, {‘gz’},’FILES’,mfilename);
Error in test (line 13)
files = gunzip(‘gshhs_h.b.gz’, workingFolder);
close all
clear all
clc

% assign the path to your working directory:
cd (‘E:SEEC’);

% add path to TelemacTolls functions (i.e. to read in telemac files into MATLAB):
addpath (‘C:Matlab_downloadm_map1.4f’);

workingFolder = tempdir;

files = gunzip(‘gshhs_c.b.gz’, workingFolder);
filename = files{1};
indexfile = gshhs(filename, ‘createindex’);

latlim = [50.45 56.31];
lonlim = [-8.1 -2.1];
S = gshhs(filename, latlim, lonlim);

delete(filename)
delete(indexfile)

levels = [S.Level];
L1 = S(levels == 1);

figure
axesm(‘mercator’, ‘MapLatLimit’, latlim, ‘MapLonLimit’, lonlim)
gridm; mlabel; plabel
geoshow([L1.Lat], [L1.Lon], ‘Color’, ‘blue’)Dear all,
The code below allowed me to download and plot the coastline of UK. However, I would like to have a better resolution. When i change, in line 13 of the code below, ‘gshhs_c.b.gz’ for ‘gshhs_h.b.gz’ an error appeared (see below). So, How can I have the best coastal resolution of the area I an interested in? please can soemone help me?

% assign the path to your working directory:
cd (‘E:SEEC’);

% add path to TelemacTolls functions (i.e. to read in telemac files into MATLAB):
addpath (‘C:Matlab_downloadm_map1.4f’);

workingFolder = tempdir;

files = gunzip(‘gshhs_c.b.gz’, workingFolder);
filename = files{1};
indexfile = gshhs(filename, ‘createindex’);

latlim = [50.45 56.31];
lonlim = [-8.1 -2.1];
S = gshhs(filename, latlim, lonlim);

delete(filename)
delete(indexfile)

levels = [S.Level];
L1 = S(levels == 1);

figure
axesm(‘mercator’, ‘MapLatLimit’, latlim, ‘MapLonLimit’, lonlim)
gridm; mlabel; plabel
geoshow([L1.Lat], [L1.Lon], ‘Color’, ‘blue’) Dear all,
The code below allowed me to download and plot the coastline of UK. However, I would like to have a better resolution. When i change, in line 13 of the code below, ‘gshhs_c.b.gz’ for ‘gshhs_h.b.gz’ an error appeared (see below). So, How can I have the best coastal resolution of the area I an interested in? please can soemone help me?

% assign the path to your working directory:
cd (‘E:SEEC’);

% add path to TelemacTolls functions (i.e. to read in telemac files into MATLAB):
addpath (‘C:Matlab_downloadm_map1.4f’);

workingFolder = tempdir;

files = gunzip(‘gshhs_c.b.gz’, workingFolder);
filename = files{1};
indexfile = gshhs(filename, ‘createindex’);

latlim = [50.45 56.31];
lonlim = [-8.1 -2.1];
S = gshhs(filename, latlim, lonlim);

delete(filename)
delete(indexfile)

levels = [S.Level];
L1 = S(levels == 1);

figure
axesm(‘mercator’, ‘MapLatLimit’, latlim, ‘MapLonLimit’, lonlim)
gridm; mlabel; plabel
geoshow([L1.Lat], [L1.Lon], ‘Color’, ‘blue’) gshhs, increase reoslution MATLAB Answers — New Questions

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