0

I am trying to create choropleth map based on zipcodes using the choroplethrZip package. My question is related to this post. I am having the same problem, where Alaska and Hawaii are not updated if I change colormap using the scale_fill_brewer.

My data is a simple dataframe with two columns, something like this.

region value
1  00501  1052
2  00544   635
3  00601   717
4  00602   264
5  00603  1275
6  00604     4

If I create my choropleth with the default function call. 

zip_choropleth(df_sample,
           title="Sample Cases",
           legend="Cases")

[Here is what I get][2]

When I change the fill using the scale_fill_brewer, all the map is changed, expect Alaska and Hawaii, here is the code:

zip_choropleth(df_sample,
           title="Sample Cases",
           legend="Cases") + scale_fill_brewer(type="seq"
                ,palette="RdPu"
                , direction = 1)

[Here is the new choropleth with Alaska and Hawaii unchanged.][3]

First, you can see what is happening. Also, the statelines are not drawn, I would like to add them if possible. When I tried to use the example in this post. Here is what I get. 

choro              = zip_choropleth$new(df_sample)

Gives the following error: Error in zip_choropleth$new : object of type 'closure' is not subsettable.

Now, I am shooting in the dark, so I tried another way:

choro              = zip_choropleth(df_sample)
choro$title        = "Sample Cases"
choro$ggplot_scale = scale_fill_brewer(name="Cases", palette="RdPu",  drop=FALSE)
choro$render()

The last command creates a error Error: attempt to apply non-function.

I am not sure if this clarifies the problem. Hope you can help.

Here is the solution:

choro              = ZipChoropleth$new(df_sample)
choro$title        = "Sample Cases"
choro$ggplot_scale = scale_fill_brewer(name="Cases", palette="RdPu", drop=FALSE)
choro$render()

This updates Alaska and Hawaii with the new palette, but changes the lines of the zipcode areas and messes the drawing. At least I go the first problem taken care of. Alaska and Hawaii updated.

Community
  • 1
  • 1
user3042084
  • 39
  • 2
  • Possible duplicate of [Alaska and Hawaii not formatting correctly for County Choropleth Map in R](http://stackoverflow.com/questions/38938565/alaska-and-hawaii-not-formatting-correctly-for-county-choropleth-map-in-r) – MikeJRamsey56 Mar 12 '17 at 22:28
  • Thanks Mike. They are different. I tried to treat the zip_chorpleth function from the ChoroplethZip package the same as suggested in the answer, but it is no the same. – user3042084 Mar 12 '17 at 23:18
  • What is different? You are going to have to [create a Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve) if you want help. – MikeJRamsey56 Mar 13 '17 at 00:25

0 Answers0