Illinois COVID-19 data and visualizations. A personal project of David Eads + Grupo Visual.
Published
Edited
Sep 19, 2022
3 forks
Importers
10 stars
HyperGrid(randomData, { columnWidth: 150 })
HyperGrid(randomData)
HyperGrid(randomData, { tableHeight: 220, itemHeight: 38, columnWidth: 120 })
HyperGrid(randomData, { showHeader: false })
md`## Tall rows / cards`
HyperGrid(randomData, {
showHeader: false,
tableHeight: 450,
itemHeight: 150,
columnWidth: width * .5,
columns: [
{
name: "card",
formatter: row => html`
<div style="background-color: papayawhip; border-radius: 15px; padding: 10px 20px;">
<p><strong>col 1:</strong> ${row.column_one}</p>
<p><strong>col 4:</strong> ${row.column_four}</p>
</div>
`
}
]
})
HyperGrid([])
function HyperGrid(
data,
{
tableHeight = 320,
itemHeight = 28,
showHeader = true,
columns = null,
columnWidth = 120,
columnMargin = 5
} = {}
) {
if (!data) {
return "No data";
} else if (!data.length) {
return "Empty data";
}
const renderColumns = columns
? columns.map(c => {
c.width = c.hasOwnProperty("width") ? c.width : columnWidth;
c.margin = c.hasOwnProperty("margin") ? c.margin : columnMargin;
return c;
})
: Object.keys(data[0]).map(key => ({
name: key,
formatter: defaultFormatter,
width: columnWidth,
margin: columnMargin
}));
// Create a container element or find one that already exists in the DOM.
const parentElement = html`<div class="vtable" style="height: ${tableHeight}px;"></div>`;
const innerElement = document.createElement('div');
parentElement.append(innerElement);
const headerWidth = renderColumns.reduce(
(acc, column) => acc + column.width + column.margin,
0
);
const list = HyperList.create(innerElement, {
width,
itemHeight,
height: tableHeight,
total: data.length,
scrollerElement: "div",
// Handle fixed header by injecting
applyPatch: (element, fragment) => {
// Remove all nodes *but* fixed header
while (
element.lastElementChild &&
!element.lastElementChild.className.includes("vrow-header")
) {
element.removeChild(element.lastElementChild);
}
// Add header once
if (showHeader && !element.lastElementChild) {
element.appendChild(html`
<div class="vrow-inner vrow-header" style="width: ${headerWidth}px;">
${renderColumns.map(column =>
hypergridCell(html`${column.name}`, column, false, itemHeight)
)}
</div>
`);
}
element.appendChild(fragment);
},
// Wire up the data to the index. The index is then mapped to a Y position
// in the container.
generate(index) {
return html`
<div class="vrow-inner">
${renderColumns.map(column =>
hypergridCell(
html`${column.formatter(data[index], column, index, data)}`,
column,
showHeader,
itemHeight
)
)}
</div>`;
}
});
parentElement.append(hypergridStyle());
return parentElement;
}
// Render a single cell
hypergridCell = (content, column, showHeader, itemHeight) => html`
<div style="height: ${itemHeight}px; width: ${column.width}px; margin-right: ${
column.margin
}px; transform: translateY(${showHeader ? itemHeight : 0}px);">
<span>${content}</span>
</div>`
// Default formatter
defaultFormatter = (row, column) => row[column.name]
fontSize = 13
hypergridStyle = () => html`<style>
.vtable {
font-size: 12px;
line-height: 14px;
overflow-x: hidden;
overflow-y: hidden;
font-family: Helvetica Neue, Helvetica, sans-serif;
}
.vrow-inner {
display: flex;
}
.vrow-inner > div {
display: flex;
align-items: center;
}
.vrow-inner > div > span {
display: inline-block;
width: 100%;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.vrow-header {
position: sticky;
z-index: 99;
left: 0;
top: 0;
background: rgb(221,221,221);
background: linear-gradient(0deg, rgba(255,255,255,1) 15%, rgba(248,248,248,1) 90%);
border-bottom: 1px solid #666;
font-weight: bold;
}
</style>`
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.