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Show a warning instead of an empty canvas if the ionosonde station has no data, and also show a warning if we have data but it's old.

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Ian Renton
2026-05-16 11:26:23 +01:00
parent a7a45190cb
commit d655354d05
12 changed files with 54 additions and 31 deletions
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18
webassets/js/conditions.js
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@@ -380,7 +380,9 @@ function populateIonosondeDropdown(data) {
// Render the foF2/MUF data and line chart for the currently selected station
function renderIonosondeData() {
// First make sure that we have some data, that a station entry is selected in the drop-down box, and that the
// data contains an entry for that station. If not, bail out at this point.
// data contains an entry for that station. If not, this represents an odd state (over and above just "no data for
// this station", so bail out at this point. The user will have to reselect something from the list, or wait until
// the API is behaving itself again.
if (!ionosondeData) return;
const ursi = $('#ionosonde-station').val();
if (!ursi) return;
@@ -406,7 +408,12 @@ function renderIonosondeData() {
const fof2Entries = toSeries(station.fof2);
const mufEntries = toSeries(station.muf);
const allTs = [...fof2Entries, ...mufEntries].map(e => e.ts);
if (allTs.length === 0) return;
if (allTs.length === 0) {
$('#ionosonde-latest').html('<div class="alert alert-warning mt-2 mb-0 py-2">No data available for this station.</div>');
$('#ionosonde-chart').hide();
if (ionosondeChart) { ionosondeChart.destroy(); ionosondeChart = null; }
return;
}
// Populate latest values summary (visible on all screen sizes)
const latestFof2 = fof2Entries.length ? fof2Entries[fof2Entries.length - 1].val : null;
@@ -418,12 +425,16 @@ function renderIonosondeData() {
const latestDate = moment.utc(maxTs * 1000);
latestTimeStr = latestDate.format('DD MMM YYYY HH:mm [UTC]') + ' (' + latestDate.fromNow() + ')';
}
const staleWarning = (maxTs !== null && (Date.now() / 1000 - maxTs) > 12 * 3600)
? '<div class="alert alert-warning mt-2 mb-0 py-2">Data is more than 12 hours old!</div>'
: '';
$('#ionosonde-latest').html(
'<div class="row border-bottom align-items-center me-0">' +
'<div class="col-12 col-md-6 py-2 text-muted">Latest values as of ' + latestTimeStr + '</div>' +
'<div class="col-12 col-md-2 py-2">foF2: <strong>' + (latestFof2 !== null ? latestFof2.toFixed(2) + ' MHz' : 'N/A') + '</strong></div>' +
'<div class="col-12 col-md-4 py-2">MUF (3000 km): <strong>' + (latestMuf !== null ? latestMuf.toFixed(2) + ' MHz' : 'N/A') + '</strong></div>' +
'</div>' +
staleWarning +
'</div>'
);
@@ -564,6 +575,9 @@ function renderIonosondeData() {
},
plugins: [bandLinesPlugin],
});
// Chart canvas is normally hidden until we get here with some definitely good data. Now we have that so show it
$('#ionosonde-chart').show();
}
// Called when the ionosonde station select changes