Fill area inside a single curve with color without an outline?

https://uk.mathworks.com/matlabcentral/answers/522591-fill-inside-a-polygon-with-a-color

The data below form an almost-closed curve (the first column is "x" and the second is "y"). I'd like to fill it with color but can't figure out how. The "patch" examples I've found online all seem to use two curves except for the one at the link I added. However, it's too advanced for me and I don't understand how to use it.

patch(x, y,' b',' EdgeColor','none', 'FaceAlpha', 0.1)

This works. It gives me a filled shape. However, there's an outline and the

'EdgeColor','none'

does not get rid of it. I'd like to get rid of the outline and would also like to impose a gradient on the fill color so that it goes from nearly clear at one end to more opaque at the other. That's a secondary goal though. The main thing I want to do is get rid of the outline.

If anyone has any hints, I'd be very grateful!

3.538283063	300.2169197
3.712296984	321.9088937
3.886310905	345.7700651
4.118329466	373.9696312
4.350348028	402.1691974
4.66937355	434.7071584
4.901392111	462.9067245
5.133410673	478.0911063
5.510440835	504.1214751
5.945475638	527.9826464
6.351508121	549.6746204
6.757540603	571.3665944
7.308584687	595.2277657
8.033642691	621.2581345
8.613689095	640.7809111
9.251740139	662.472885
9.918793503	684.164859
10.52784223	701.5184382
11.28190255	736.2255965
11.65893271	747.0715835
11.86194896	773.1019523
12.15197216	783.9479393
12.58700696	794.7939262
13.10904872	805.6399132
13.45707657	814.3167028
13.77610209	822.9934924
14.44315545	838.1778742
14.84918794	849.0238612
15.34222738	859.8698482
15.98027842	875.0542299
16.44431555	883.7310195
16.79234339	890.2386117
17.14037123	896.7462039
17.48839907	905.4229935
17.80742459	909.7613883
18.387471	920.6073753
18.93851508	933.6225597
19.60556845	946.637744
20.35962877	961.8221258
20.91067285	972.6681128
21.49071926	983.5140998
22.04176334	992.1908894
22.44779582	1000.867679
22.47679814	1009.544469
21.63573086	1018.221258
21.63573086	1042.08243
21.75174014	1061.605206
22.07076566	1074.62039
22.70881671	1087.635575
23.72389791	1104.989154
24.12993039	1113.665944
24.18793503	1120.173536
23.92691415	1120.173536
23.57888631	1113.665944
22.79582367	1100.650759
22.59280742	1096.312364
21.89675174	1083.29718
21.46171694	1074.62039
20.91067285	1065.943601
20.70765661	1061.605206
20.09860789	1048.590022
19.92459397	1046.420824
19.51856148	1033.40564
19.57656613	1048.590022
19.80858469	1102.819957
20.01160093	1111.496746
19.80858469	1120.173536
19.08352668	1102.819957
18.90951276	1037.744035
18.47447796	1031.236443
18.15545244	1024.72885
16.61832947	994.3600868
15.19721578	961.8221258
12.70301624	903.2537961
12.38399072	894.5770065
12.15197216	888.0694143
11.94895592	885.9002169
11.65893271	896.7462039
11.02088167	879.3926247
9.889791183	846.8546638
8.236658933	794.7939262
7.714617169	777.4403471
7.366589327	801.3015184
6.26450116	749.2407809
6.061484919	736.2255965
5.829466357	736.2255965
5.423433875	768.7635575
4.75638051	807.8091106
5.278422274	849.0238612
5.626450116	870.7158351
5.394431555	877.2234273
5.104408353	857.7006508
4.582366589	816.4859002
4.292343387	792.6247289
3.886310905	749.2407809
3.567285383	705.856833
2.987238979	597.3969631
2.842227378	554.0130152
2.552204176	517.1366594
2.088167053	473.7527115
1.56612529	434.7071584
1.56612529	326.2472885
1.305104408	308.8937093
1.276102088	298.0477223
3.10324826	302.3861171
3.538283063	300.2169197

Answer 1

[Davide Masiello]

You should remove unnecessary spaces (' EdgeColor' --> 'EdgeColor').

A = [3.538283063	300.2169197
    3.712296984	321.9088937
    3.886310905	345.7700651
    4.118329466	373.9696312
    4.350348028	402.1691974
    4.66937355	434.7071584
    4.901392111	462.9067245
    5.133410673	478.0911063
    5.510440835	504.1214751
    5.945475638	527.9826464
    6.351508121	549.6746204
    6.757540603	571.3665944
    7.308584687	595.2277657
    8.033642691	621.2581345
    8.613689095	640.7809111
    9.251740139	662.472885
    9.918793503	684.164859
    10.52784223	701.5184382
    11.28190255	736.2255965
    11.65893271	747.0715835
    11.86194896	773.1019523
    12.15197216	783.9479393
    12.58700696	794.7939262
    13.10904872	805.6399132
    13.45707657	814.3167028
    13.77610209	822.9934924
    14.44315545	838.1778742
    14.84918794	849.0238612
    15.34222738	859.8698482
    15.98027842	875.0542299
    16.44431555	883.7310195
    16.79234339	890.2386117
    17.14037123	896.7462039
    17.48839907	905.4229935
    17.80742459	909.7613883
    18.387471	920.6073753
    18.93851508	933.6225597
    19.60556845	946.637744
    20.35962877	961.8221258
    20.91067285	972.6681128
    21.49071926	983.5140998
    22.04176334	992.1908894
    22.44779582	1000.867679
    22.47679814	1009.544469
    21.63573086	1018.221258
    21.63573086	1042.08243
    21.75174014	1061.605206
    22.07076566	1074.62039
    22.70881671	1087.635575
    23.72389791	1104.989154
    24.12993039	1113.665944
    24.18793503	1120.173536
    23.92691415	1120.173536
    23.57888631	1113.665944
    22.79582367	1100.650759
    22.59280742	1096.312364
    21.89675174	1083.29718
    21.46171694	1074.62039
    20.91067285	1065.943601
    20.70765661	1061.605206
    20.09860789	1048.590022
    19.92459397	1046.420824
    19.51856148	1033.40564
    19.57656613	1048.590022
    19.80858469	1102.819957
    20.01160093	1111.496746
    19.80858469	1120.173536
    19.08352668	1102.819957
    18.90951276	1037.744035
    18.47447796	1031.236443
    18.15545244	1024.72885
    16.61832947	994.3600868
    15.19721578	961.8221258
    12.70301624	903.2537961
    12.38399072	894.5770065
    12.15197216	888.0694143
    11.94895592	885.9002169
    11.65893271	896.7462039
    11.02088167	879.3926247
    9.889791183	846.8546638
    8.236658933	794.7939262
    7.714617169	777.4403471
    7.366589327	801.3015184
    6.26450116	749.2407809
    6.061484919	736.2255965
    5.829466357	736.2255965
    5.423433875	768.7635575
    4.75638051	807.8091106
    5.278422274	849.0238612
    5.626450116	870.7158351
    5.394431555	877.2234273
    5.104408353	857.7006508
    4.582366589	816.4859002
    4.292343387	792.6247289
    3.886310905	749.2407809
    3.567285383	705.856833
    2.987238979	597.3969631
    2.842227378	554.0130152
    2.552204176	517.1366594
    2.088167053	473.7527115
    1.56612529	434.7071584
    1.56612529	326.2472885
    1.305104408	308.8937093
    1.276102088	298.0477223
    3.10324826	302.3861171
    3.538283063	300.2169197];

x = A(:,1);
y = A(:,2);

patch(x, y,'b','EdgeColor','none','FaceAlpha', 0.1)

[Srh Fwl]

Thank you for that. Your code works for me when I use it by itself.

It doesn't work when I use it with my own X, Y variables. What I mean is, I import the data from an external file and get it as a table. For me,

x = importedTable.xColumn;
y = importedTable.yColumn;

When I use this, I just get a black outline, not the nice blob I get when I use (as you did):

x = A(:,1);
y = A(:,2);

I'll try to figure out what the problem is with table data but can use your suggest if I can't!

Thank you very much.

[Davide Masiello]

feel free to attach the table, so we can try to do it too.

[Srh Fwl]

Thank you very much, Davide. Actually, I just figured out the problem! A silly mistake on my part. Appreciate your patience and Star Strider's.