Structurae

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Structurae is an online database containing pictures and information about structural and civil engineering works, and their associated engineers, architects, and builders.[1][2][3]

Overview

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Structurae was founded in 1998 by Nicolas Janberg, who had studied civil engineering at Princeton University.[4] In March 2012, Structurae was acquired by Ernst & Sohn (de), a subsidiary of John Wiley & Sons, Inc.,[5] with Janberg joining the company as Structurae's editor-in-chief.[6] At that time, the website received more than one million pageviews per month, and was available in English, French and German.[4] In 2015, Janberg bought the site back to operate it as a freelancer again.[6][7]

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 //
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 //            Please do not modify it anywhere else, as it may get copied and override your changes.
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 //
 // Template translation is in https://commons.wikimedia.org/wiki/Data:Original/Template:Graphs.tab
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 "version": 2, "width":600, "height": 600, "padding": 0,
 "signals":[
   // These signals allow us to quickly move the map within the image, e.g. to leave space for the legend

{"name":"legendWidth", "init": {"expr": "0"} }, 

   {"name":"legendHeight", "init": {"expr": "height"} },
   {"name":"imgWidth", "init": {"expr": "width-legendWidth"} },
   {"name":"imgHeight", "init": {"expr": "height"} },
   {"name":"imgXC", "init": {"expr": "imgWidth/2"} },
   {"name":"imgYC", "init": {"expr": "imgHeight/2"} },
   {"name":"imgTileSize", "init": {"expr": "256"} },
   {"name":"imgLat", "init": {"expr": "50.7"} },
   {"name":"imgLon", "init": {"expr": "10"} },
   {"name":"imgZoom", "init": {"expr": "4"} },
   {"name":"picWidth", "init": {"expr": "180"} },
   {"name":"picHeight", "init": {"expr": "picWidth/2"} },
   {"name":"picXC", "init": {"expr": "imgWidth-(picWidth/2)"} },
   {"name":"picYC", "init": {"expr": "imgHeight-(picHeight/2)"} },
   {"name":"showMiniMap", "init": {"expr": "0"} }
 ],
 "data": [
   {
     "name": "data",

// If query parameter is given, use it to get data from Wikidata Query service 

     // Assume that it contains "coord" field with the geo coordinates
     "url": "wikidatasparql:///?query=%23%20Each%20location%20should%20show%20only%20once.%20This%20query%20may%20output%20all%20the%20same%20values%20as%20in%20the%20other%20examples%2C%20such%20as%20%22text%22%2C%20%22img%22%2C%20and%20others.%0ASELECT%20%28%3Fitem%20as%20%3Fid%29%20%28SAMPLE%28%3Fcoord%29%20as%20%3Fcoord%29%20%28SAMPLE%28%3Ftype%29%20as%20%3Ftype%29%0AWHERE%20%7B%0A%20%3Fitem%20wdt%3AP454%20%3FheritageId%20.%0A%20%3Fitem%20wdt%3AP625%20%3Fcoord%20.%0A%20%3Fitem%20wdt%3AP31%20%3Ftype%20.%0A%7D%0AGROUP%20BY%20%3Fitem",
     "format": {"type": "json"},
     "transform": [

// If query is given, translate geo coordinate [longitude, latitude] array into two values 

       { "type": "formula", "field":"lon", "expr": "datum.coord[0]" },
       { "type": "formula", "field":"lat", "expr": "datum.coord[1]" },
       {
         "type": "geo",
         "projection": "mercator",
         "scale": {"expr": "imgTileSize/PI/2*pow(2,imgZoom)"},
         "translate": [{"expr": "imgXC"}, {"expr": "imgYC"}],
         "center": [{"expr": "imgLon"}, {"expr": "imgLat"}],
         "lon": "lon", "lat": "lat"
       },
       { "type": "formula", "field":"layout_x", "expr": "datum.layout_x + (datum.offsetX || 0)" },
       { "type": "formula", "field":"layout_y", "expr": "datum.layout_y + (datum.offsetY || 0)" },
       { "type": "formula", "field":"color", "expr": "datum.color || '#c33'" },
       { "type": "formula", "field":"textColor", "expr": "datum.textColor || datum.color" },
       { "type": "formula", "field":"strokeColor", "expr": "datum.strokeColor || '#ffe7e6'" }
     ]
   },
   {
     // Hack: single value data source for drawing/hiding images and other non-series elements
     "name": "dummyData",
     "values": [{}]
   }
 ],

"scales": [ 

   {
     "name": "sColor",
     "type": "ordinal",
     "range": "category10",
     "domain": {"data": "data", "field": "type"}
   }
 ],

// Legend only works if showLegend and colorScaleField are set 

 "marks": [
   {
     "type": "image",
     "from": {
       "data": "dummyData",
       "transform": [
         { "type": "formula", "field":"url", "expr": "'mapsnapshot:///?width='+imgWidth+'&height='+imgHeight+'&zoom='+imgZoom+'&lat='+imgLat+'&lon='+imgLon+'&lang=en'" }
       ]
     },
     "properties": {
       "enter": {
         "url": {"field": "url"},
         "xc": {"signal": "imgXC"}, "yc": {"signal": "imgYC"},
         "width": {"signal": "imgWidth"}, "height": {"signal": "imgHeight"}
       }
     }
   },
   {
     // Places an image of a given name and size at the [lan,lon] location
     "type": "image",
     "from": {
       "data": "data",
       "transform": [
         { "type": "filter", "test": "datum.img" },
         { "type": "formula", "field":"iconWidth", "expr": "datum.width || 0" },
         { "type": "formula", "field":"iconHeight", "expr": "datum.height || 0" },
         { "type": "formula", "field":"img",
           "expr": "if(!test(/^[a-z]+:\\/\\//, datum.img), 'wikifile:///'+datum.img, datum.img)" },
         // Ensure that either width or height parameter is passed to wikifile:// request
         { "type": "formula", "field":"img",
           "expr": "if((datum.iconWidth || datum.iconHeight) && !test(/[?&](width|height)=\\d/, datum.img),if(datum.iconWidth,datum.img+'?width='+datum.iconWidth,datum.img+'?height='+datum.iconHeight), datum.img)" }
     ]},
     "properties": {
       "enter": {
         "url": {"field": "img"},
         "xc": {"field": "layout_x"}, "yc": {"field": "layout_y"},
         "width": {"field": "iconWidth"}, "height": {"field": "iconHeight"}
       }
     }
   },
   {
     // Draw marks of a given color, shape, and size at the [lan,lon] location
     "type": "symbol",
     "from": {
       "data": "data",
       "transform": [{ "type": "filter", "test": "!datum.img" }]
     },
     "properties": {
       "enter": {
         "x": {"field": "layout_x"},
         "y": {"field": "layout_y"},
         // If colorScaleField is set, use color scaling, otherwise use the preset color value
         "fill": { "field": "type", "scale": "sColor" },
         "size": {"field": "size"},
         "shape": {"field": "shape"},
         "stroke": {"field": "strokeColor"}
       }
     }
   },
   {
     // Draw text with the given color and size at the [lan,lon] location
     // See https://github.com/vega/vega/wiki/Marks#text for all parameter description (prepend "text" and capitalize them)
     "type": "text",
     "from": {
       "data": "data",
       "transform": [
         { "type": "filter", "test": "datum.text" },
         // Figure out if this is an LTR or RTL page. For LTR, show label to the right of the icon, left-aligned. For RTL, reverse.
         { "type": "formula", "field":"isLTR", "expr": "'‎' == '\\u200E'" },
         // If these values are not defined ("undefined" is not allowed, so test for truthiness and not 0)
         { "type": "formula", "field":"textDx", "expr": "if(!datum.textDx && datum.textDx != 0, if(datum.isLTR,8,-8), datum.textDx)" },
         { "type": "formula", "field":"textAlign", "expr": "if(!datum.textAlign, if(datum.isLTR,'left','right'), datum.textAlign)" },
         { "type": "formula", "field":"textBaseline", "expr": "datum.textBaseline || 'middle'" }
     ]},
     "properties": {
       "enter": {
         "text": {"field": "text"},
         "x": {"field": "layout_x" },
         "y": {"field": "layout_y"},
         "dx": {"field": "textDx" },
         "dy": {"field": "textDy"},
         "fill": {"field": "textColor"},
         "align": {"field": "textAlign"},
         "baseline": {"field": "textBaseline"},
         "radius": {"field": "textRadius"},
         "theta": {"field": "textTheta"},
         "angle": {"field": "textAngle"},
         "font": {"field": "textFont"},
         "fontSize": {"field": "textFontSize"},
         "fontWeight": {"field": "textFontWeight"},
         "fontStyle": {"field": "textFontStyle"}
       }
     }
   },
   {
     // Draw a low-zoom locator map frame
     "type": "rect",
     "from": {
       "data": "dummyData",
       "transform": [
         { "type": "filter", "test": "showMiniMap" }
       ]
     },
     "properties": {
       "enter": {
         "xc": {"signal": "picXC"}, "yc": {"signal": "picYC"},
         "width": {"signal": "picWidth", "offset":2}, "height": {"signal": "picHeight"},
         "stroke": {"value":"#fff"},"strokeWidth": {"value":6}
       }
     }
   },
   {
     // Draw a low-zoom locator map by using a premade world map image
     "type": "image",
     "from": {
       "data": "dummyData",
       "transform": [
         { "type": "filter", "test": "showMiniMap" },
         { "type": "formula", "field":"url", "expr": "1" }
       ]
     },
     "properties": {
       "enter": {
         "url": {"value": "wikirawupload:"},
         "xc": {"signal": "picXC"}, "yc": {"signal": "picYC"},
         "width": {"signal": "picWidth"}, "height": {"signal": "picHeight"}
       }
     }
   },
   {
     // Draw a zoom-out mark at the [lan,lon] location
     "type": "symbol",
     "from": {
       "data": "dummyData",
       "transform": [
         { "type": "filter", "test": "showMiniMap" },
         { "type": "formula", "field":"lat", "expr": "imgLat" },
         { "type": "formula", "field":"lon", "expr": "imgLon" },
         {
           "type": "geo",
           "projection": "equirectangular",
           "scale": {"expr": "180/2/PI"},
           "translate": [{"expr": "picXC"}, {"expr": "picYC"}],
           "center": [{"expr": "0"}, {"expr": "0"}],
           "lon": "lon", "lat": "lat"
         }
       ]
     },
     "properties": {
       "enter": {
         "x": {"field": "layout_x"}, "y": {"field": "layout_y"},
         "fill": {"value": "#c33"},
         "stroke": {"value": "#ffe7e6"},
         "size": {"value": 40}
       }
     }
   }
 ]

}

</graph>

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References

[edit | edit source]
  1. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  2. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  3. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  4. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  5. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  6. ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  7. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
[edit | edit source]
File:Wikidata-logo.svg
Wikidata has the properties: Lua error in Module:Uses_Wikidata at line 13: attempt to index field 'wikibase' (a nil value).


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