Empresas
Empleos
  • Sobre nosotros
  • Soluciones
    • Publicación de vacantes
      Publica tu vacante y recibe candidatos calificados en 48h.
    • Evaluación de candidatos
      500+ pruebas técnicas y psicológicas, más anti-fraude.
    • Headhunting
      Búsqueda ejecutiva a la medida de principio a fin.
    • Nómina + EOR
      Dispersión de nómina y EOR en más de 15 países de LATAM.
  • Precios
  • Empleos

0

273
Vistas
g group element doesn't start at 0,0 inside the svg

I am trying d3.js with svelte, and I started to do a simple bar chart, but I am facing an issue I couldn't figure out. The issue, is, the group element g inside the svg element, that contains the bars, is initially shifted from the origin of the svg element (the top left corner). This is the code

<script>
  import * as d3 from 'd3';
  let data = [
    { name: 'Apple', amount: 20 },
    { name: 'Orange', amount: 80 },
    { name: 'Banana', amount: 50 },
    { name: 'Grapes', amount: 10 },
  ];

  let width = 600;
  let height = 400;

  let margins = { top: 20, right: 20, bottom: 100, left: 100 };

  let innerWidth = width - margins.left - margins.right;
  let innerHeight = height - margins.top - margins.bottom;

  const xScale = d3
    .scaleBand()
    .domain(data.map((d) => d.name))
    .range([0, innerWidth])
    .paddingInner(0.1);
  const yScale = d3
    .scaleLinear()
    .domain([0, d3.max(data, (d) => d.amount)])
    .range([innerHeight, 0]);
</script>

<div class="canvas">
  <svg {width} {height}>
    <g>
      {#each data as d}
        <rect
          width={xScale.bandwidth()}
          height={innerHeight - yScale(d.amount)}
          x={xScale(d.name) + xScale.bandwidth() / 2}
          y={yScale(d.amount)}
        />
      {/each}
    </g>
  </svg>
</div>

<style>
  .canvas {
    margin-top: 100px;
    width: 600px;
    height: 400px;
    background-color: #fff;
  }
</style>

I was expecting the group element g to start at (0,0) of the svg element (the top left corner), but it's x-shifted without any transform attribute on the g element. This is messing things up when I try to shift the group element appropriately to add axes later. My question is: why is there initial shift?

Here are the svg and g elements as appear on the screen

enter image description here enter image description here

about 4 years ago · Juan Pablo Isaza
1 Respuestas
Responde la pregunta

0

Your g is not translated, the bounds of the g merely reflect the bounds of its contents. If the contents aren't bounded by a point at [0,0], the g also won't be bounded by a point at [0,0].

Eyeballing it, I'd say the left most limit of the bars, and therefore the g, is about half the bandwidth from the edge of the SVG. If we look at how you position the bars, that makes sense:

 x={xScale(d.name) + xScale.bandwidth() / 2}

Despite a scaled value of 0 for the first bar, the rectangle is nudged over by half the bandwidth. The placement of the g just reflects the placement of the bars, not a transform.

about 4 years ago · Juan Pablo Isaza Denunciar
Responde la pregunta
Encuentra empleos remotos

¡Descubre la nueva forma de encontrar empleo!

Top de empleos
Top categorías de empleo
Empresas
Publicar vacante Precios Comercial
Legal
Términos y condiciones Política de privacidad
© 2026 PeakU Inc. All Rights Reserved.
Andres GPT
Recomiéndame algunas ofertas
Necesito ayuda