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Merge pull request #35 from lindsaycarr/d3
successfully inject map d3 into target/index.html (correct branch this time!)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Width and height | ||
| var chart_width = 1000; | ||
| var chart_height = 600; | ||
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| // Projection | ||
| var projection = d3.geoMercator() //changing to geoAlbers makes the map disappear | ||
| .scale(1500) | ||
| .center([-91.34397, 32.25196]) | ||
| .translate([chart_width / 2, chart_height / 2]); | ||
| var path = d3.geoPath() | ||
| .projection(projection); | ||
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| // Create SVG | ||
| var svg = d3.select("body") | ||
| .append("svg") | ||
| .attr("width", chart_width) | ||
| .attr("height", chart_height); | ||
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| var map = svg.append( 'g' ) | ||
| .attr( 'id', 'map' ); | ||
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| // Add map features | ||
| d3.json('../cache/state_map.geojson', function(us_data){ | ||
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| map.selectAll( 'path' ) | ||
| .data(us_data.features) | ||
| .enter() | ||
| .append('path') | ||
| .attr('d', path) | ||
| .attr('fill', "cornflowerblue") | ||
| .attr('stroke', '#fff') | ||
| .attr('stroke-width', 0.5) | ||
| .on("mouseover", mouseover) | ||
| .on("mouseout", mouseout); | ||
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| }); | ||
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| function mouseover(d){ | ||
| d3.select(this).style('fill', 'orange'); | ||
| } | ||
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| function mouseout(d){ | ||
| d3.select(this).style('fill', "cornflowerblue"); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,26 @@ | ||
| fetchTimestamp.save_map <- vizlab::alwaysCurrent | ||
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| #' Saves sf data as geojson. | ||
| #' @description Converts sf data to sp, then saves as geojson for use in d3. | ||
| #' | ||
| #' @param viz a vizlab object including \code{viewbox_limits} and \code{fetch_args} | ||
| #' @details | ||
| #' Depends on: \code{map_data}: an sf representation of the x and y | ||
| #' (geographic coordinates) values of map_data shapes (counties, states, countries, etc). | ||
| #' | ||
| process.save_map <- function(viz){ | ||
| deps <- readDepends(viz) | ||
| checkRequired(deps, "map_data") | ||
| map_data <- deps[["map_data"]] | ||
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| # spatial data needs to be sp to use writeOGR | ||
| # saves empty file if there is not any map features | ||
| if(nrow(map_data) > 0){ | ||
| map_data_sp <- as(map_data, "Spatial") | ||
| rgdal::writeOGR(map_data_sp, viz[['location']], | ||
| layer="map_data_sp", driver="GeoJSON") | ||
| } else { | ||
| write.table(data.frame(), viz[["location"]]) | ||
| } | ||
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| } |
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