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Quadrilátero gradiente
http://tinyurl.com/DicaR-QuadrilateroGradiente
José Roberto Motta Garcia
garcia.cptec@gmail.com	Nov/2016
Dica
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Definindo as cores de preenchimento
Objetivo geral
Plotar um retângulo
com preenchimento
gradiente entre duas
ou mais cores
É uma função somente,
e não as cores propriamente ditas
Estas são as cores geradas pela função,
de acordo com o número passado.
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Cria a imagem já com as cores
O tipo do objeto indica que é uma imagem.
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Plota a imagem
Obedece o posicionamento
da área de plotagem, que varia de
0 a 10 nos dois eixos, neste caso.
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Plota a imagem - exemplo 2
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Plota a imagem - exemplo 3
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Inconveniente
Disposição da área do quadrilátero não se adequa dinamicamente
às dimensões da janela de gráfico do RStudio.
Mesmo código é executado com 3
diferentes dimensões da janela de
gráficos do RStudio.
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Alternativa - Pacote Plotrix
Sequência de cores + quantidade de cores
de transição para a próxima cor
informada, finalizando com a última cor
do gradiente.
transparência borda sentido do
gradiente
José Roberto M. Garcia Nov/2016Quadrilátero gradiente
Aplicações práticas de um quadrilátero gradiente
Criar uma legenda de acordo
com uma escala de cores
Construir uma imagem

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Dica R - Quadrilátero gradiente

  • 2. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Definindo as cores de preenchimento Objetivo geral Plotar um retângulo com preenchimento gradiente entre duas ou mais cores É uma função somente, e não as cores propriamente ditas Estas são as cores geradas pela função, de acordo com o número passado.
  • 3. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Cria a imagem já com as cores O tipo do objeto indica que é uma imagem.
  • 4. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Plota a imagem Obedece o posicionamento da área de plotagem, que varia de 0 a 10 nos dois eixos, neste caso.
  • 5. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Plota a imagem - exemplo 2
  • 6. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Plota a imagem - exemplo 3
  • 7. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Inconveniente Disposição da área do quadrilátero não se adequa dinamicamente às dimensões da janela de gráfico do RStudio. Mesmo código é executado com 3 diferentes dimensões da janela de gráficos do RStudio.
  • 8. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Alternativa - Pacote Plotrix Sequência de cores + quantidade de cores de transição para a próxima cor informada, finalizando com a última cor do gradiente. transparência borda sentido do gradiente
  • 9. José Roberto M. Garcia Nov/2016Quadrilátero gradiente Aplicações práticas de um quadrilátero gradiente Criar uma legenda de acordo com uma escala de cores Construir uma imagem