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I have a table like this
id nodeName longitude Latitude
'0' 'Sydney1' '151.20732' '-33.86785'
'1' 'Brisbane2' '153.02809' '-27.46794'
'2' 'Canberra1' '149.12807' '-35.28346'
that contain id of Nodes, Nod names and geographical longitudes and Latitudes.
now i want to have graph that be ecording to longitude and Latitude and also show the nod names as label of Nodes in plot. but i cant.

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Cris LaPierre
Cris LaPierre 2021-1-31
Why not? What error message are you getting? Share the code you are using.
M Abedi
M Abedi 2021-2-1
NodeCell2=cell(NodNumber, 4);
for i=1:NodNumber
NodeCell2(i,1)=all_ids(i); %id
NodeCell2(i,2)=all_names(i); %name
NodeCell2(i,3)=all_longs(i); % longitude
NodeCell2(i,4)=all_lats(i); %latitude
end
figure(3);
%plot(lats,longs,nodes);
plot(NodeCell2(:,2),NodeCell2(:,3), NodeCell2(:,2));
i use this comands . NodeCell2 is my cell matrix. but i cant show it in graph. this code has such error:
Error using plot
Invalid first data argument
Error in mytest7 (line 185)
plot(NodeCell2(:,2),NodeCell2(:,3), NodeCell2(:,2));
i am new in using Matlab and i dont know it well.
Walter Roberson
Walter Roberson 2021-2-1
NodeCell2 = cell{1,4};
NodeCell2{1} = str2double(all_ids);
NodeCell2{2} = categorical(all_names);
NodeCell2{3} = str2double(all_longs);
NodeCell2{4} = str2double(all_lats);
scatter(NodeCell2{3}, NodeCell2{4});
text(NodeCell2{3}, NodeCell2{4}, NodeCell2{1}); %you might need string(NodeCell2{1}))

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Cris LaPierre
Cris LaPierre 2021-2-1
Ran in:

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Ran in:
My first suggestion is to not convert your data to a cell. If you want to store everything in a single variable, use a table.
all_ids={'0';'1';'2'};
all_names={'Sydney1';'Brisbane2';'Canberra1'};
all_longs={'151.20732';'153.02809';'149.12807'};
all_lats={'-33.86785';'-27.46794';'-35.28346'};
myTbl = table(str2double(all_ids),string(all_names),str2double(all_longs),str2double(all_lats),'VariableNames',["id","nodeName","Longitude","Latitude"])
myTbl = 3x4 table
id nodeName Longitude Latitude __ ___________ _________ ________ 0 "Sydney1" 151.21 -33.868 1 "Brisbane2" 153.03 -27.468 2 "Canberra1" 149.13 -35.283
You can't include text in your plot command. Use the text function. See this page for how to access data in a table.
plot(myTbl.Latitude,myTbl.Longitude,'^');
text(myTbl.Latitude,myTbl.Longitude,"\leftarrow " + myTbl.nodeName)

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