防止缩小R-Map单张吗? [英] Prevent zooming out in leaflet R-Map?
问题描述
我用传单R-package制作了传单地图.
I made a leaflet map with the leaflet R-package.
结果如下所示:
我对此非常满意,但是当我将其嵌入网站并用笔记本电脑向下滚动文章时,我常常不小心缩小了地图,看起来像这样:
I am very happy with it, but when I embed it into a website and scroll down the article with my laptop I often accidentally zoom out of the map which then looks like this:
用户也必须放大地图,看看地图的引导部分,这确实让我很烦.
The user have to zoom back in too have a look at the intersteing part of the map which really annoys me.
是否可以像平常一样放大地图,但不能像在图像上那样放大地图,从而冻结地图的一部分?我尝试在代码中设置视图",但是您仍然可以缩小视图,因此我删除了该部分.
Is there a way to freeze the part of the map like you can zoom in as usual but can't zoom out more than like on the image? I tried setting the View in my code but you still can zoom out so I deleted that part.
mymap <- leaflet() %>%
addProviderTiles("Esri.WorldGrayCanvas") %>%
addPolygons(data = dortmund,
fillColor = ~palette(student1$Anteil), ## we want the polygon filled with
## one of the palette-colors
## according to the value in student1$Anteil
fillOpacity = 0.6, ## how transparent do you want the polygon to be?
color = "darkgrey", ## color of borders between districts
weight = 1.5, ## width of borders
popup = popup1, ## which popup?
group="<span style='color: #7f0000; font-size: 11pt'><strong>2000</strong></span>")%>%
## which group?
## the group's name has to be the same as later in "baseGroups", where we define
## the groups for the Layerscontrol. Because for this layer I wanted a specific
## color and size, the group name includes some font arguments.
## for the second layer we mix things up a little bit, so you'll see the difference in the map!
addPolygons(data = dortmund,
fillColor = ~palette(student2$Anteil),
fillOpacity = 0.2,
color = "white",
weight = 2.0,
popup = popup2,
group="2014")%>%
addLayersControl(
baseGroups = c("<span style='color: #7f0000; font-size: 11pt'><strong>2000</strong></span>", ## group 1
"2014" ## group 2
),
options = layersControlOptions(collapsed = FALSE))%>% ## we want our control to be seen right away
addLegend(position = 'topleft', ## choose bottomleft, bottomright, topleft or topright
colors = c('#fee0d2',
'#fcbba1',
'#fc9272',
'#fb6a4a',
'#ef3b2c',
'#cb181d',
'#a50f15',
'#67000d'),
labels = c('0%',"","","","","","",'26%'), ## legend labels (only min and max)
opacity = 0.6, ##transparency
title = "relative<br>amount") ## title of the legend
原谅我的英语水平很差.如果回答我的问题很重要,请在此处查看完整代码: http://journocode.com/2016 /01/28/your-first-choropleth-map/.
Forgive my bad english skills. If it's important to answer my question, full code's here: http://journocode.com/2016/01/28/your-first-choropleth-map/.
非常感谢您
推荐答案
用以下内容替换addProviderTiles(设置想要的最大和最小缩放级别:
Replace your addProviderTiles with the following (set whatever zoom levels you want for max and min:
addProviderTiles("Esri.WorldGrayCanvas",
options = providerTileOptions(minZoom=10, maxZoom=18))
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