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dash-info.yaml
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pkg_help_description: >-
'Dash' ships with supercharged components for
interactive user interfaces. A core set of components,
written and maintained by the 'Dash' team, is available in
the 'dashCoreComponents' package. The source for this package
is on GitHub: plotly/dash-core-components.
pkg_help_title: >-
Core Interactive UI Components for 'Dash'
pkg_authors: >-
c(person("Chris", "Parmer", email = "[email protected]", role = c("aut")), person("Ryan Patrick", "Kyle", email = "[email protected]", role = c("cre"), comment = c(ORCID = "0000-0002-4958-2844")), person(family = "Plotly Technologies, Inc.", role = "cph"))
pkg_copyright: >-
Plotly Technologies, Inc.
r_examples:
- name: dccChecklist
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
dccChecklist(
id = "checklist-input",
options=list(
list("label" = "New York City", "value" = "NYC"),
list("label" = "Montreal", "value" = "MTL"),
list("label" = "San Francisco", "value" = "SF")
),
value=list("MTL", "SF")
)
)
app$run_server()
}
- name: dccInterval
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
library(plotly)
app <- Dash$new()
app$layout(
htmlDiv(list(
htmlH2('3 Second Updates'),
dccInterval(id = '3s-interval',
interval= 3*1000,
n_intervals = 0),
htmlDiv(list(
dccGraph(id = 'live-graph')
)
)
)
)
)
app$callback(
output = list(
output('live-graph', 'figure')
),
params = list(
input('3s-interval', 'n_intervals')
),
update_graph <- function(n_intervals) {
df <- data.frame(
'time' = c(1:8),
'value' = sample(1:8, 8),
'value-2' = sample(1:8, 8)
)
bar <- animation_opts(plot_ly(
data = df, x=~time, y=~value, type = "bar"),
1000, easing = "cubic-in-out"
)
return(list(bar))
}
)
app$run_server()
}
- name: dccSlider
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
list(
dccSlider(
id = "slider-input",
min = -5,
max = 10,
step = 0.5,
value = -3
),
htmlDiv(
id = "slider-output",
children = "Make a selection on the slider to see the value appear here."
)
)
)
)
app$callback(
output("slider-output", "children"),
list(input("slider-input", "value")),
function(value) {
return(paste0("You have chosen ", value, " on the slider above."))
}
)
app$run_server()
}
- name: dccConfirmDialog
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
list(
dccConfirmDialog(
id='confirm',
message='Danger danger! Are you sure you want to continue?'),
dccDropdown(
options=lapply(list('Safe', 'Danger!!'),function(x){list('label'= x, 'value'= x)}),
id='dropdown'
),
htmlDiv(id='output-confirm1')
)
)
)
app$callback(
output = list(id = 'confirm', property = 'displayed'),
params=list(input(id = 'dropdown', property = 'value')),
function(value){
if(value == 'Danger!!'){
return(TRUE)}
else{
return(FALSE)}
})
app$run_server()
}
- name: dccLink
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
# represents the URL bar, doesn't render anything
dccLocation(id = 'url', refresh=FALSE),
dccLink('Navigate to "/"', href='/'),
htmlBr(),
dccLink('Navigate to "/page-2"', href='/page-2'),
# content will be rendered in this element
htmlDiv(id='page-content')
)
)
)
app$callback(output=list(id='page-content', property='children'),
params=list(
input(id='url', property='pathname')),
function(pathname) {
paste0('You are on page ', pathname)
}
)
app$run_server()
}
- name: dccStore
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
# The memory store reverts to the default on every page refresh
dccStore(id='memory'),
# The local store will take the initial data
# only the first time the page is loaded
# and keep it until it is cleared.
dccStore(id='local', storage_type='local'),
# Same as the local store but will lose the data
# when the browser/tab closes.
dccStore(id='session', storage_type='session'),
htmlTable(list(
htmlThead(list(
htmlTr(htmlTh('Click to store in:', colSpan='3')),
htmlTr(list(
htmlTh(htmlButton('memory', id='memory-button')),
htmlTh(htmlButton('localStorage', id='local-button')),
htmlTh(htmlButton('sessionStorage', id='session-button'))
)),
htmlTr(list(
htmlTh('Memory clicks'),
htmlTh('Local clicks'),
htmlTh('Session clicks')
))
)),
htmlTbody(list(
htmlTr(list(
htmlTd(0, id='memory-clicks'),
htmlTd(0, id='local-clicks'),
htmlTd(0, id='session-clicks')
))
))
))
)))
for (i in c('memory', 'local', 'session')) {
app$callback(
output(id = i, property = 'data'),
params = list(
input(id = paste0(i, '-button'), property = 'n_clicks'),
state(id = i, property = 'data')
),
function(n_clicks, data){
if(is.null(n_clicks)){
return()
}
if(is.null(data[[1]])){
data = list('clicks' = 0)
} else{
data = data
}
data['clicks'] = data$clicks + 1
return(data)
}
)
}
for (i in c('memory', 'local', 'session')) {
app$callback(
output(id = paste0(i, '-clicks'), property = 'children'),
params = list(
input(id = i, property = 'modified_timestamp'),
state(id = i, property = 'data')
),
function(ts, data){
if(is.null(ts)){
return()
}
if(is.null(data[[1]])){
data = list()
} else {
data = data
}
return(data$clicks[[1]])
}
)
}
app$run_server()
}
- name: dccConfirmDialogProvider
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
dccConfirmDialogProvider(
children=htmlButton(
'Click Me',
n_clicks = 0
),
id='danger-danger-provider',
message='Danger danger! Are you sure you want to continue?',
submit_n_clicks=NULL
),
htmlDiv(id='output-provider',
children='Click the button to submit')
)))
app$callback(
output = list(id = 'output-provider', property = 'children'),
params=list(input(id = 'danger-danger-provider', property = 'submit_n_clicks')),
function(submit_n_clicks) {
if (is.null(unlist(submit_n_clicks))) {
return('')
} else {
paste0('That was a dangerous choice! Submitted ', submit_n_clicks, ' times.')
}
}
)
app$run_server()
}
- name: dccLoading
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(
children=list(
htmlH3("Edit text input to see loading state"),
dccInput(id="input-1", value='Input triggers local spinner'),
dccLoading(id="loading-1", children=list(htmlDiv(id="loading-output-1")), type="default"),
htmlDiv(
list(
dccInput(id="input-2", value='Input triggers nested spinner'),
dccLoading(
id="loading-2",
children=list(htmlDiv(list(htmlDiv(id="loading-output-2")))),
type="circle"
)
)
)
)
))
app$callback(
output = list(id='loading-output-1', property = 'children'),
params = list(input(id = 'input-1', property = 'value')),
function(value){
Sys.sleep(1)
return(value)
}
)
app$callback(
output = list(id='loading-output-2', property = 'children'),
params = list(input(id = 'input-2', property = 'value')),
function(value){
Sys.sleep(1)
return(value)
}
)
app$run_server()
}
- name: dccTab
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
dccTabs(id="tabs", value='tab-1', children=list(
dccTab(label='Tab one', value='tab-1'),
dccTab(label='Tab two', value='tab-2')
)
),
htmlDiv(id='tabs-content')
)
)
)
app$callback(output('tabs-content', 'children'),
params = list(input('tabs', 'value')),
function(tab){
if(tab == 'tab-1'){
return(htmlDiv(list(
htmlH3('Tab content 1')
)))}
else if(tab == 'tab-2'){
return(htmlDiv(list(
htmlH3('Tab content 2')
)))}
}
)
app$run_server()
}
- name: dccDatePickerRange
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
dccDatePickerRange(
id = "date-picker-range",
start_date = as.Date("1997/5/10"),
end_date_placeholder_text="Select a date!"
)
)
app$run_server()
}
- name: dccLocation
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
# represents the URL bar, doesn't render anything
dccLocation(id = 'url', refresh=FALSE),
dccLink('Navigate to "/"', href='/'),
htmlBr(),
dccLink('Navigate to "/page-2"', href='/page-2'),
# content will be rendered in this element
htmlDiv(id='page-content')
)
)
)
app$callback(output=list(id='page-content', property='children'),
params=list(
input(id='url', property='pathname')),
function(pathname)
{
paste0('You are on page ', pathname)
}
)
app$run_server()
}
- name: dccTabs
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(htmlDiv(list(
dccTabs(id="tabs", value='tab-1', children=list(
dccTab(label='Tab one', value='tab-1'),
dccTab(label='Tab two', value='tab-2')
)
),
htmlDiv(id='tabs-content')
)
)
)
app$callback(output('tabs-content', 'children'),
params = list(input('tabs', 'value')),
function(tab){
if(tab == 'tab-1'){
return(htmlDiv(list(
htmlH3('Tab content 1')
)))}
else if(tab == 'tab-2'){
return(htmlDiv(list(
htmlH3('Tab content 2')
)))}
}
)
app$run_server()
}
- name: dccDatePickerSingle
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
dccDatePickerSingle(
id = "date-picker-single",
date = as.Date("1997/5/10")
)
)
app$run_server()
}
- name: dccLogoutButton
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
dccLogoutButton(logout_url='/custom-auth/logout')
)
app$run_server()
}
- name: dccTextarea
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
dccTextarea(
placeholder = 'Enter a value...',
value = 'This is a TextArea component'
)
)
)
app$run_server()
}
- name: dccDropdown
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
dccDropdown(
options=list(
list(label = "New York City", value = "NYC"),
list(label = "Montreal", value = "MTL"),
list(label = "San Francisco", value = "SF")
),
value="MTL"
)
)
)
app$run_server()
}
- name: dccMarkdown
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$title("dccMarkdown Syntax Highlighting Demo")
# dccMarkdown leverages Highlight.js, which allows
# app developers to specify the language inline
# and highlight its syntax properly:
app$layout(
htmlDiv(
list(
htmlDiv(htmlH2("Syntax markdown demo:")),
dccMarkdown(children = "
```r
library(dash)
app <- Dash$new()
app$layout(htmlDiv('Dash app code wrapped within an app'))
app$run_server()
```")
)
)
)
app$run_server()
}
- name: dccUpload
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
library(jsonlite)
app <- Dash$new()
app$layout(htmlDiv(list(
dccUpload(
id='upload-image',
children=htmlDiv(list(
'Drag and Drop or ',
htmlA('Select Files')
)),
style=list(
'height'= '60px',
'lineHeight'= '60px',
'borderWidth'= '1px',
'borderStyle'= 'dashed',
'borderRadius'= '5px',
'textAlign'= 'center',
'margin'= '10px'
),
# Allow multiple files to be uploaded
multiple=TRUE
),
htmlDiv(id='output-image-upload')
)))
parse_content = function(contents, filename, date) {
return(htmlDiv(list(
htmlH5(filename),
htmlH6(as.POSIXct(date, origin="1970-01-01")),
htmlImg(src=contents),
htmlHr(),
htmlDiv('Raw Content'),
htmlPre(paste(substr(toJSON(contents), 1, 100), "..."), style=list(
'whiteSpace'= 'pre-wrap',
'wordBreak'= 'break-all'
))
)))
}
app$callback(
output = list(id='output-image-upload', property = 'children'),
params = list(input(id = 'upload-image', property = 'contents'),
state(id = 'upload-image', property = 'filename'),
state(id = 'upload-image', property = 'last_modified')),
function(list_of_contents, list_of_names, list_of_dates) {
if (!is.null(list_of_contents) && !is.null(list_of_names) && !is.null(list_of_dates[[1]])) {
children = lapply(1:length(list_of_contents), function(x){
parse_content(list_of_contents[[x]], list_of_names[[x]], list_of_dates[[x]])
})
}
else {
children = "Upload a file to see the raw data."
}
return(children)
}
)
app$run_server()
}
- name: dccGraph
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
library(plotly)
app <- Dash$new()
year <- c(1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012)
worldwide <- c(219, 146, 112, 127, 124, 180, 236, 207, 236, 263,
350, 430, 474, 526, 488, 537, 500, 439)
china <- c(16, 13, 10, 11, 28, 37, 43, 55, 56, 88, 105, 156, 270,
299, 340, 403, 549, 499)
data <- data.frame(year, worldwide, china)
app$layout(
htmlDiv(
dccGraph(
figure = layout(
add_trace(
plot_ly(data,
x = ~year,
y = ~worldwide,
type = "bar",
name = "Worldwide",
marker = list(color = "rgb(55, 83, 109)")
),
y = ~china,
name = "China",
marker = list(color = "rgb(26, 118, 255)")
),
yaxis = list(title = "Count"),
xaxis = list(title = "Year"),
barmode = "group",
title="US Export of Plastic Scrap"),
style = list("height" = 300),
id = "my_graph"
)
)
)
app$run_server()
}
- name: dccRadioItems
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
dccRadioItems(
options=list(
list("label" = "New York City", "value" = "NYC"),
list("label" = "Montreal", "value" = "MTL"),
list("label" = "San Francisco", "value" = "SF")
),
value = "MTL"
)
)
)
app$run_server()
}
- name: dccInput
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
dccInput(
placeholder = "Enter a value...",
type = "text",
value = ""
)
)
)
app$run_server()
}
- name: dccRangeSlider
dontrun: FALSE
code: |
if (interactive()) {
library(dash)
app <- Dash$new()
app$layout(
htmlDiv(
dccRangeSlider(
count = 1,
min = -5,
max = 10,
step = 0.5,
value = list(-3, 7),
marks = as.list(
setNames(-5:10, as.character(-5:10))
)
)
)
)
app$run_server()
}