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Skip the header and bad data

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This commit is contained in:
Tim Schaub
2019-04-17 12:21:33 -07:00
parent 84a82ea5b2
commit fc0ed7b96f
2 changed files with 17 additions and 20 deletions
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19
examples/filter-points-webgl.js
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@@ -10,7 +10,6 @@ import WebGLPointsLayerRenderer from '../src/ol/renderer/webgl/PointsLayer';
import {clamp, lerp} from '../src/ol/math';
import Stamen from '../src/ol/source/Stamen';
const features = [];
const vectorSource = new Vector({
features: [],
attributions: 'NASA'
@@ -109,26 +108,28 @@ function loadData() {
client.open('GET', 'data/csv/meteorite_landings.csv');
client.onload = function() {
const csv = client.responseText;
const features = [];
let prevIndex = csv.indexOf('\n') + 1; // scan past the header line
let curIndex;
let prevIndex = 0;
let line;
while ((curIndex = csv.indexOf('\n', prevIndex)) > 0) {
line = csv.substr(prevIndex, curIndex - prevIndex).split(',');
while ((curIndex = csv.indexOf('\n', prevIndex)) != -1) {
const line = csv.substr(prevIndex, curIndex - prevIndex).split(',');
prevIndex = curIndex + 1;
// skip header
if (prevIndex === 0) {
const coords = fromLonLat([parseFloat(line[4]), parseFloat(line[3])]);
if (isNaN(coords[0]) || isNaN(coords[1])) {
// guard against bad data
continue;
}
const coords = fromLonLat([parseFloat(line[4]), parseFloat(line[3])]);
features.push(new Feature({
mass: parseFloat(line[1]) || 0,
year: parseInt(line[2]) || 0,
geometry: new Point(coords)
}));
}
vectorSource.addFeatures(features);
};
client.send();

18
examples/icon-sprite-webgl.js
View File

@@ -10,7 +10,6 @@ import {fromLonLat} from '../src/ol/proj';
import WebGLPointsLayerRenderer from '../src/ol/renderer/webgl/PointsLayer';
import {lerp} from '../src/ol/math';
const features = [];
const vectorSource = new Vector({
features: [],
attributions: 'National UFO Reporting Center'
@@ -70,17 +69,14 @@ function loadData() {
client.open('GET', 'data/csv/ufo_sighting_data.csv');
client.onload = function() {
const csv = client.responseText;
let curIndex;
let prevIndex = 0;
let line;
while ((curIndex = csv.indexOf('\n', prevIndex)) > 0) {
line = csv.substr(prevIndex, curIndex - prevIndex).split(',');
prevIndex = curIndex + 1;
const features = [];
// skip header
if (prevIndex === 0) {
continue;
}
let prevIndex = csv.indexOf('\n') + 1; // scan past the header line
let curIndex;
while ((curIndex = csv.indexOf('\n', prevIndex)) != -1) {
const line = csv.substr(prevIndex, curIndex - prevIndex).split(',');
prevIndex = curIndex + 1;
const coords = fromLonLat([parseFloat(line[5]), parseFloat(line[4])]);