Mapa · Dot density map
Mapa de densidad de puntos
Un mapa de densidad de puntos representa cantidades agregadas repitiendo símbolos de igual valor dentro de polígonos. Permite explorar su distribución territorial. Cuando los puntos se distribuyen artificialmente, sus posiciones no son localizaciones de eventos.
También: mapa de puntos, dot map, distribución por puntos.
- Qué permite ver
- Explorar patrones geográficos
- Clave de lectura
- Un símbolo de valor fijo, distribuido dentro de cada área.
El ejemplo en vivo
Consultas agregadas representadas por puntos de valor fijo
Ventana hipotética de 30 días · panel ficticio · cartografía real Natural Earth 1:110m · proyección cilíndrica equivalente · 1 punto = 10 consultas · posiciones generadas, semilla 6219
Enfocá o abrí el código de un país para consultar su dato. La tabla conserva el detalle completo.
- 1 punto = 10 consultas ficticias. Las posiciones se generan dentro de cada país; no son eventos geolocalizados.
PDF guarda la vista del gráfico; SVG conserva la imagen vectorial y TSV contiene los datos. Este ejemplo usa datos simulados o un esquema hipotético.
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Las posiciones se generan dentro de cada país; no son eventos geolocalizados.","tone":1}],"note":"Reparto uniforme en la superficie proyectada, con semilla fija para reproducibilidad. No se dispone de coordenadas de consultas. La proyección conserva áreas, pero la geometría está generalizada y no sirve para localizar personas.","kind":"Datos simulados","height":440,"map":true,"mapSource":"Natural Earth admin 0 countries 110m v5.1.1, public domain","locations":[{"name":"Argentina","code":"ARG","x":256.369,"y":288.636,"labelX":105,"labelY":350,"lat":-33.501159,"lon":-64.173331,"value":"40 consultas","detail":"4 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"},{"name":"Bolivia","code":"BOL","x":254.329,"y":190.282,"labelX":105,"labelY":110,"lat":-16.666015,"lon":-64.593433,"value":"60 consultas","detail":"6 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"},{"name":"Brasil","code":"BRA","x":327.325,"y":161.648,"labelX":495,"labelY":90,"lat":-12.098687,"lon":-49.55945,"value":"80 consultas","detail":"8 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"},{"name":"Chile","code":"CHL","x":216.82,"y":313.04,"labelX":95,"labelY":260,"lat":-38.151771,"lon":-72.318871,"value":"50 consultas","detail":"5 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"},{"name":"Paraguay","code":"PRY","x":275.921,"y":220.898,"labelX":495,"labelY":205,"lat":-21.674509,"lon":-60.146394,"value":"70 consultas","detail":"7 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"},{"name":"Uruguay","code":"URY","x":296.214,"y":285.712,"labelX":495,"labelY":335,"lat":-32.961127,"lon":-55.966942,"value":"100 consultas","detail":"10 puntos; 1 punto = 10; posiciones ilustrativas, 30 días"}],"projection":"Lambert cylindrical equal-area; x=lambda*cos(30deg), y=sin(phi)/cos(30deg); fit preserves common scale","dots":[{"country":0,"x":273.58344862897974,"y":282.7848808544744},{"country":0,"x":213.44332701740416,"y":367.4253783383276},{"country":0,"x":224.72769748503435,"y":327.8953314931635},{"country":0,"x":304.01711238745787,"y":254.42855290123634},{"country":1,"x":242.23149727409938,"y":216.2082615073018},{"country":1,"x":260.39314274031113,"y":194.30062388126342},{"country":1,"x":240.26974297358515,"y":215.26814880274353},{"country":1,"x":246.46133043742927,"y":190.20209557731425},{"country":1,"x":253.2467753712605,"y":209.72731910531434},{"country":1,"x":236.4574139228263,"y":219.02102928376502},{"country":2,"x":332.78668267451224,"y":224.72697814275418},{"country":2,"x":258.27472856014964,"y":98.40367263340671},{"country":2,"x":331.3176628665402,"y":97.80205280029308},{"country":2,"x":332.88550144853446,"y":214.16688528419195},{"country":2,"x":347.1867729917094,"y":190.86991485032348},{"country":2,"x":319.9913149998263,"y":158.38174134806826},{"country":2,"x":364.6896655571088,"y":128.72914199750778},{"country":2,"x":373.15107233277706,"y":138.03109098363203},{"country":3,"x":218.57835480120218,"y":297.3569085902062},{"country":3,"x":207.90172420061845,"y":374.7021165909979},{"country":3,"x":226.51034394513815,"y":382.38918857657933},{"country":3,"x":220.93217849148158,"y":380.15360401908003},{"country":3,"x":213.5354409106588,"y":360.4476029309218},{"country":4,"x":272.6644901738996,"y":213.89899970938566},{"country":4,"x":297.04252558632936,"y":250.87272800176055},{"country":4,"x":289.9781383914417,"y":252.8546462818992},{"country":4,"x":272.1198700115015,"y":220.32862828398007},{"country":4,"x":297.66077571145956,"y":234.80820878299303},{"country":4,"x":297.5932369355885,"y":235.99381707271678},{"country":4,"x":267.20009392242554,"y":217.0820529711235},{"country":5,"x":297.9991734701972,"y":276.61393405596147},{"country":5,"x":292.36750270739617,"y":291.78648054034096},{"country":5,"x":289.4549620823404,"y":270.4300141935132},{"country":5,"x":307.90723694018135,"y":282.5454252734559},{"country":5,"x":288.07148606553767,"y":286.3708946233045},{"country":5,"x":297.6290557814832,"y":279.8279446762067},{"country":5,"x":290.5500959924934,"y":287.56177314723726},{"country":5,"x":299.6662883728458,"y":279.68726928387883},{"country":5,"x":293.465425085444,"y":288.26737533846284},{"country":5,"x":306.31695567105197,"y":290.4453898274118}]}Datos simulados para enseñar la lectura; no son resultados de Lisandro ni de un cliente.
Consultar los datos del ejemplo
| País | Consultas | Puntos de 10 consultas |
|---|---|---|
| Argentina | 40 | 4 |
| Bolivia | 60 | 6 |
| Brasil | 80 | 8 |
| Chile | 50 | 5 |
| Paraguay | 70 | 7 |
| Uruguay | 100 | 10 |
Qué preguntas ayuda a responder
- ¿Cómo se reparte un volumen registrado entre territorios?
- ¿Qué diferencia hay entre puntos ubicados al azar y eventos geolocalizados?
Qué datos necesitás
Polígonos geográficos válidos y recuentos no negativos con una unidad de punto definida. Una tasa no se debe convertir directamente en número de puntos como si fuera volumen.
En el ejemplo, 1 punto equivale a 10 consultas inventadas de panel. Los recuentos 40, 60, 80, 50, 70 y 100 producen 4, 6, 8, 5, 7 y 10 puntos: 40 símbolos para 400 consultas. Las posiciones se generaron dentro de geometrías reales, con una semilla fija.
Cómo leerlo
Contá o estimá conjuntos de símbolos usando la leyenda y consultá los totales por país. Una zona visualmente densa puede combinar más puntos con menos superficie.
Se usa una proyección cilíndrica equivalente para conservar la comparación de áreas. Aun así, los puntos no revelan ciudades, domicilios ni concentración interna real: el reparto uniforme es una decisión del ejemplo.
Cuándo elegirlo y cuándo buscar otra opción
Para cantidades por área cuando interesa comunicar distribución agregada. Mostrá el valor de cada punto, el criterio de ubicación y la resolución geográfica disponible.
Si tenés coordenadas de eventos y autorización para mostrarlas, corresponde un mapa de localizaciones con otra definición. Para tasas, un coroplético; para totales fáciles de comparar, símbolos proporcionales o barras.
Errores y malas interpretaciones
- Leer un punto artificial como diez consultas ocurridas en ese lugar exacto.
- Cambiar la unidad de punto entre paneles sin avisar.
- Interpretar el reparto uniforme dentro del país como evidencia de cobertura homogénea.
Alternativas para comparar
- Mapa de burbujas. Agrupa el volumen territorial en un símbolo proporcional sin simular distribución interna.
- Mapa coroplético. Representa una tasa por área con su denominador.
En dashboards, informes y presentaciones
En una presentación, escribí junto al mapa «posiciones ilustrativas dentro de cada país». Esa aclaración cambia lo que se puede concluir. Si no hay evidencia espacial interna, no uses el mapa para proponer ubicaciones de locales.
Fuentes y alcance de la revisión
Se consultaron las secciones pertinentes de estas fuentes para la definición, codificación o método indicado. Los ejemplos, cálculos aplicados y textos de esta ficha pertenecen al proyecto.