Data Tip addition not working

Dear, I'm trying to change the data tip of my plot and I get an error I relly can't understand

The code takes data from file: FertilitySoloCountries.xlxs (attached). Its a file reporting the fertility rate for each country (one country per row) and for 16 year intervals (on the column). I want to plot these trends. And I do with the following code.

close all;
clc

figPosition = [0 0 1 1];
data = readtable('FertilitySoloCountries.xlsx', 'PreserveVariableNames', true);
yearRange = data.Properties.VariableNames;
yearRange = yearRange(:,2:end);
countries = table2cell(data(:,1));
numCountries = numel(countries);
dataMat = table2array(data(:, 2:end));
numRange = size(dataMat,2);
numCols = 4;
numRows = floor(numRange/4);

meanEveryNation = mean(dataMat);

figSparks = figure('Name', 'With SparkLines',  'units','normalized','outerposition',figPosition);
hold on; plot(meanEveryNation, 'k--', 'LineWidth', 2);
colormap 
for nC = 1: numel(countries)
     hold on; h = plot(dataMat'); %legend(countries);
     addTip = dataTipTextRow('country',countries{nC});
     h.DataTipTemplate.DataTipRows(end+1) = addTip;
end
ax = gca;
ax.XTickLabelRotation = 90;
set(ax,'XTick',1:numel(yearRange), 'XTickLabel', yearRange, 'fontsize', 6);

saveas(figSparks, 'PlotPerRange.jpg');

The code worked until I wanted to add a data tip. When I do that, matlab says:

Expected one output from a curly brace or dot indexing expression, but there were 209 results.

Error in PlotFertilitaPulito (line 23)
     h.DataTipTemplate.DataTipRows(end+1) = addTip;

Where am I making it wrong?

I have been using datatips in another work... and it worked!

Answer 1

[Jan Studnicka]

close all;
clc
figPosition = [0 0 1 1];
data = readtable('FertilitySoloCountries.xlsx', 'PreserveVariableNames', true);
yearRange = data.Properties.VariableNames;
yearRange = yearRange(:,2:end);
countries = table2cell(data(:,1));
numCountries = numel(countries);
dataMat = table2array(data(:, 2:end));
numRange = size(dataMat,2);
numCols = 4;
numRows = floor(numRange/4);
meanEveryNation = mean(dataMat);
figSparks = figure('Name', 'With SparkLines',  'units','normalized','outerposition',figPosition);
hold on; plot(meanEveryNation, 'k--', 'LineWidth', 2);
colormap
h = plot(dataMat');
for nC = 1: numel(countries)
     addTip = dataTipTextRow('country',repmat(string(countries{nC}),16,1));
     h(nC).DataTipTemplate.DataTipRows(end+1) = addTip;
end
ax = gca;
ax.XTickLabelRotation = 90;
set(ax,'XTick',1:numel(yearRange), 'XTickLabel', yearRange, 'fontsize', 6);
saveas(figSparks, 'PlotPerRange.jpg');

[Elena Casiraghi]

Thanks!

You're true!!!