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Questions tagged [carto]

CARTO empowers any organization and individual to discover and predict key insights through location data. With CARTO’s intuitive location intelligence platform anyone can build self-service location based apps that help optimize operational performance, strategic investments, and everyday decisions....

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17 views

Carto Loading Error

I have a map with two medium-size datasets, no intensive SQL running. I have the link layer analysis applied and that's it. However, the loading times are ridiculously slow. The map loads in ...
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1answer
20 views

It's possible to lock a data set programmatically through the API in Carto

We are automating the creation of data sets with Carto. Now we would like to be able to lock to avoid unwanted changes in the data. We know that this can be done through the dashboard, but is it ...
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1answer
43 views

How to run basic setup CARTO VL?

I'm new to HTML and to CARTO VL, hoping to jump right in to make a map with animated lines and points, which combined are unavailable in CARTO Builder. I've tried to run the basic CARTO VL set-up ...
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1answer
26 views

Editing Legend Text in Carto (“Other”)

I'm working on a map that has nine unique categories and Carto adds an "Other" category to the legend. There is no other data outside of my nine unique categories and I can't get rid of Other label on ...
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0answers
10 views

Changing url of cartodb call in Torque.js?

I am trying to change base url of L.TorqueLayer method call. I want to add my db which is hosted on AWS instead of the default one with the {user}.cartodb.com/api... Also I cannot find options which ...
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3answers
30 views

How do you create buffers around points based on individual point values in CARTO?

I am very new to CARTO and have very limited coding skills. I have a data set of points representing the centroid of zip codes. Each point has an associated average commute time. It is relatively ...
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2answers
33 views

CARTO not styling 36 total representatives

I'm extremely new to CARTO and I'm still learning the ropes. I currently have this territory map where the colors represent a representative in a county. However, it isn't shading the 36 total ...
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0answers
43 views

Leaflet/CARTO.js: Emulate layer click (=open info window) after search & fitBounds?

I defined info windows with the CARTO.JS event "featureClicked" - unfortunately, this does not work after the user selects a layer in the search bar that is not part of the actual map. Any idea how ...
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1answer
47 views

Leaflet map with jQuery autocomplete: fitBounds (click input) on selection?

I'm trying to fire a click event on my search button and/or the input field as soon as a user selects something from the jQuery autocomplete <li>: https://jsfiddle.net/grh2dLyw/1/ I'm not sure ...
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0answers
12 views

Unable to load data into Cartodb on a local install via docker

I have installed cartodb using the following https://github.com/mnzaki/cartodb-docker/tree/versionsAndFixes Everything works fine and I am able to login. The problem occurs when I try to upload data ...
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1answer
32 views

cartojs 4 and print button [closed]

Is it possible to use the print function of leaflet with cartojs v.4? i'm not able to use all this plugins https://leafletjs.com/plugins.html#printexport The print button works but can i use also ...
2
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1answer
44 views

Group multiple lines of data by country

I'm a novice with Carto and GIS generally. I have a data table with a few thousand lines of data. Each row of data has a country and a numerical value. I'm trying to total the value by country ...
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1answer
13 views

How to use CARTO map visualization in Odyssey.js sandbox

I have a story map in Odyssey's sandbox GUI. I want to use a visualization I have in CARTO as a base map for this map. How can I find my viz key? All the documentation seems to refer to an option that ...
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0answers
17 views

How can I query data from a CARTO map?

I have a question regarding querying data from CARTO. It always worked for me for datasets via an API call. But in this case, I need to query the data directly from a CARTO map (the institution also ...
2
votes
1answer
48 views

St_Segmentize on CARTO

I need help with the phrasing of this query. I am applying this in CARTO to a file with lines. The following query does not generate a curve as expected. I am new to SQL/PostGIS. select mycartoid....
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1answer
54 views

ST_Area yields total area encompased by a polygon. How do I get just the area covered by a polygon?

Here's my dataset: https://aaron-bauman.carto.com/dataset/curbs_1 I want to calculate the area covered by the purple only. ST_Area seems to be yielding all the area within the purple as well because ...
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1answer
28 views

Setting coordinate system in CARTO Builder map?

I uploaded a polygon layer in EPSG 25830, called 'parcels'. I know that the geometries are reprojected and the dataset has two geometry columns: 'the_geom' in EPSG 4326 'the_geom_webmercator' in ...
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1answer
20 views

CARTO Mobile SDK.UWP (C#) Get always get current map's south-west MapPos and north-east MapPos

How can I always get the current map's south-west MapPos and north-east MapPos when I zoom in/zoom out the map or drag the map? I want to create a dynamic bounding box for Carto Map.
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1answer
32 views

SQL and CARTO - Dot Density Visualization

I need help with running a SQL on CARTO. I want to generate a dot density similar to the link here. The second portion of the SQL code deletes the cartodb column and nothing changes on the map. ...
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0answers
23 views

How can I use the MapEventlistener and VectorElementEventlistener via Carto Map Mobile SDK. UWP?

I m using the Carto Map Mobile SDK (UWP) to implement the customized carto map on a UWP app. However, I do not know how can I use the MapEventListener and VectorElementEventListener on my app (using ...
0
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1answer
22 views

Adding labels to a Carto VL visualization?

It was possible to add labels to polygon visualizations in Carto.js 3.x via the CartoCSS; is there a way to add them in Carto VL visualizations? From what I can tell, Carto VL doesn't have the ...
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1answer
26 views

How can I add a customised Carto Map Marker via Carto Map Moblie SDK.UWP?

I'm implementing a Universal Windows Platform (UWP) app, and I m using the Carto Map Mobile SDK (UWP). However, I don't know how to add a .png image as a Map Marker programmatically. Here is my code: ...
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1answer
170 views

Blocked loading mixed active content error when loading named map as layer in CARTO?

I am unable to get my layers to draw on my Carto map using https. My map is created I can see the basemap, but the layers do not draw. The layers load locally, but they won't when I host the site on ...
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2answers
33 views

How to delete dataset in Carto?

I uploaded the incorrect file. How do I delete this dataset from my map or account?
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1answer
15 views

Carto zoom to areas in “link second layer”

I have a Carto map with two layers which I have linked using Carto's "Link Second Layer" analysis. I added a widget which lets me select the name of polygons and through this link, the map returns ...
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0answers
58 views

Creating Polygons from Points in Carto

Using Carto, I am trying to create shapefiles of regions using points(Link to Dataset in Carto ) with a shared column value to group by. I've included 3 photographs. 1st photograph of the points ...
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1answer
41 views

Error while rendering Map from CARTO without any code change [closed]

I have suddenly started getting error while rendering US map. This has come without any code changes. We are using CARTO.js. Uncaught TypeError: Cannot read property 'lat' of undefined at d....
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1answer
29 views

Carto.JS - Pop up closes when mouse hovers out of feature

As per the CARTO docs I am using the following code to trigger a info pop up when the user's mouse hovers over a feature: const popup = L.popup({ closeButton: false }); ecosystem.on(carto.layer....
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0answers
53 views

How to convert .yml to .mml file?

I want to use this style in my tile server. But I am using Carto for creating mapnik.xml. It says I need to supply a mml file to convert it to mapnik xml. Is there any way that I can convert a yml ...
0
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1answer
43 views

Carto Builder map not filtering dynamically

I have a Carto Builder map with several layers and widgets in it. I assumed that when filtering the widgets or the time series that the points on the map would also update to show only the filtered ...
0
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1answer
42 views

Editing the description in the dashboard view of a Carto map once the map has been published?

It appears that once you write a description in the dashboard view of a Carto map (where it says "Add description...") the text is un-editable. Is there a way to edit the text? The map on the left ...
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1answer
92 views

How to fill polygons with patterns in Carto using polygon-pattern-file?

I'm trying to create a layer in Carto with three categories of transparent hatching of different colors. I understand how to use the polygon-pattern-file Carto CSS style but am wondering where I can ...
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2answers
80 views

Carto UTF Grid in OpenLayers 5

Openlayers doesn't seem to support the URL that Carto prefers for getting UTF Grids. import TileLayer from 'ol/layer/Tile'; import UTFGrid from 'ol/source/UTFGrid'; const newUTFLayer = new TileLayer(...
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1answer
37 views

Seeking tutorial on Time Slider in Carto?

I want to add a time slider to a map. It looks as if I have to do that via CartoCSS but I really don't know where to start. Unfortunately, I don't understand what all the other posts regarding this ...
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0answers
75 views

Performance issues in Carto-VL?

UPDATE: Issue will be solved in next version of Carto. See github I'm using Carto VL to build a simple webapp for some data inspection within our GIS team. The web-app can be found here (Link might ...
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1answer
80 views

React / CARTO Enabling interactions

I have a React JS component that adds a Layer to the Basemap: componentDidMount() { const { client } = this.props; // Craete source, styles and layer with the given props const ...
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2answers
88 views

CARTO.js / ReactJS: Showing and hiding layers on toggle

I have a the following layer: class DataLayer extends Component { static contextTypes = { map: PropTypes.object, // Leaflet map }; componentDidMount() { const { client } = this.props; ...
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2answers
81 views

Formatting numbers coming from dataset to include commas for thousands in Carto map legend?

I'm using carto.js v4 to build my map. The legend I've put together displays some of the data as numbers next to value scaled markers As example I have: document.getElementById('gasDistmax')....
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1answer
200 views

ReactJS TypeError “not a constructor” on running a component with Carto

I am trying to integrate a CARTO map according to this example: Importing Carto: // Import react-leaflet for the map / basemap components import { Map, TileLayer as Basemap } from 'react-leaflet'; /...
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0answers
44 views

Points and animation not showing up on CartoVL JavaScript page

I'm trying to show my points and animation for CartoVL. I'm using a local Ubuntu installation as explained in https://cartodb.readthedocs.io/en/latest/install.html I am including the basic Carto / ...
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1answer
74 views

Dissolve/merge polygons using ST_Union in CARTO

I am attempting to dissolve the boundaries between several polygons using a common attribute within a column in CARTO and the ST_Union function. In my scenario, I have created a table for all US Zip ...
0
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2answers
90 views

Adding a legend to CARTO.js v4 map application

I have made a map that shows fire risk for the different Districts within South Africa, and each fire risk is styled by value to match a certain color. I am trying to add a legend to show what each ...
0
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1answer
33 views

Appending dataset in Carto?

Is there a way to add rows to an existing dataset while importing in a table? I've have tried inserting directly from an existing dataset but get an issue withe cartodb_id already existing.
1
vote
1answer
56 views

How to use ST_SymDifference for polygons from the same table having the same name value in CARTO?

I am very new to PostGIS2.4 and Postgresql 10 and having hard times to make holes inside a polygon using another polygon from a single table liveuamap by using ST_SymDifference. The polygon in the ...
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1answer
44 views

CARTO.js (V4) - How to style different values of a polygon

Using Carto.js V4, I have added a layer that shows fire risk levels (low, medium, high and extreme) for South Africa. This is the code I have used to call the layer from my Carto library: const ...
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1answer
46 views

Where to find datasets for creating CARTO VL maps?

Is there any way to download example datasets like NYC taxi and origin-destination data? Like those that show flight paths from and to some cities. I think it'd help me greatly if I could somehow get ...
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1answer
27 views

Syncing to a Box file via CARTO

So I'm pretty sure I'm missing something very simple, but -- I'm trying to create a new dataset inside CARTO, by using the "Connect Dataset" button and choosing "Box" (I want to connect to a CSV file ...
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1answer
56 views

Using CARTO VL on local Ubuntu installation

I'm trying to use CARTO VL on local Ubuntu 16.04 installation. To connect to local CARTO installation, I used the following config in my index.html: carto.setDefaultConfig({ serverURL: 'http://me....
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1answer
39 views

CARTO popup links redirect back to embed map?

When I click a link in the pop-up window the link opens a new tab to the same CARTO map instead of redirecting to the url specified. Here is my code: <div class="CDB-infowindow CDB-infowindow--...
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1answer
108 views

Add labels to layer in CARTO.js (v4)

Does anyone know how to add labels (using a feature column such as "state") to a CARTO.js layer? This is how I have added the layer to my map: const boundariesDataset = new carto.source.Dataset(` ...