ggplot2 - r ggplot show cluster labels on the plot -


i new r , trying generate series of figures clustering algorithm. right using following code:

ggplot(df,aes(x=v1,y=v2)) +  geom_point(aes(colour = factor(cluster)),alpha=0.7) + scale_colour_manual(values=c("purple", "green","orange","black")) + ggtitle("visualizing users , k-means euclidean clusters")

as can see have 4 clusters results of k-means. want show text on plot. example in following image:

enter image description here

i need mean of each cluster (or text cluster labels) shown on in figure (for example 0.5 on green area). guess should geom_text purpose unfortunately have no idea how. appreciated.

thanks

try this

library(ggplot2) cl <- kmeans(iris[, 1:2], 3, nstart = 25) ggplot(transform(iris[, 1:2], cl = factor(cl$cluster)),         aes(x = sepal.length, y = sepal.width, colour = cl)) +   geom_point() +    scale_colour_manual(values=c("purple", "green","orange")) +    annotate("point", x = cl$centers[, 1], y = cl$centers[, 2], size = 5, colour = c("purple", "green","orange")) +    annotate("text", x = cl$centers[, 1], y = cl$centers[, 2], font = 2, size = 10,            label = apply(cl$centers, 1, function(x) paste(sprintf('%02.2f', x), collapse = ",") ),             colour = c("purple", "green","orange") )

enter image description here


-

Comments

Post a Comment

Popular posts from this blog

OpenCV OpenCL: Convert Mat to Bitmap in JNI Layer for Android -

there several posts converting mat bitmap using utils.mattobitmap() function. i'm assuming function can called in java layer after importing utils class. i want transfer data memory address pointed uint32_t* bmpcontent; in code below. jniexport void jnicall java_com_nod_nodcv_nodcvactivity_runfilter( jnienv *env, jclass clazz, jobject outbmp, jbytearray indata, jint width, jint height, jint choice, jint filter) { int outsz = width*height; int insz = outsz + outsz/2; androidbitmapinfo bmpinfo; if (androidbitmap_getinfo(env, outbmp, &bmpinfo) < 0) { throwjavaexception(env,"gaussianblur","error retrieving bitmap meta data"); return; } if (bmpinfo.format != android_bitmap_format_rgba_8888) { throwjavaexception(env,"gaussianblur","expecting rgba_8888 format"); return; } uint32_t* bmpcontent; if (androidbitmap_lockpixels(env, outbmp,(void**)&bmpcontent)...
Read more

android - org.xmlpull.v1.XmlPullParserException: expected: START_TAG {http://schemas.xmlsoap.org/soap/envelope/}Envelope -

i trying hit soap api in application login purpose , getting above mentioned error , can 1 tell me going wrong , first time soap apis. here code hit soap :- vector<object> args = new vector<object>(); hashtable<string, object> hashtable = new hashtable<string, object>(); hashtable.put("email", "mss.siddhart28@gmail.com"); hashtable.put("password", "siddharth"); args.add(hashtable); soapserializationenvelope envelope = new soapserializationenvelope( soapenvelope.ver11); envelope.dotnet = true; envelope.xsd = soapserializationenvelope.xsd; envelope.enc = soapserializationenvelope.enc; (new marshalhashtable()).register(envelope); httptransportse androidhttptransport = new httptransportse( "http://tempuri.org/", 15000); androidhttptransport.debug = true; string result = ""; try { soapobject request = new soapobject("http:...
Read more

python - How to remove the Xframe Options header in django? -

i have made page has iframe . inside iframe want show multiple different links article facebook, or news, or youtube video or other possible url. but, due xframe header, unable so. referred following link: https://docs.djangoproject.com/en/1.8/ref/clickjacking/ , django xframeoptionsmiddleware (x-frame-options) - allow iframe client ip but didn't help. my settings.py file's middleware_classes is: middleware_classes = ( 'django.contrib.sessions.middleware.sessionmiddleware', 'django.middleware.common.commonmiddleware', 'django.middleware.csrf.csrfviewmiddleware', 'django.contrib.auth.middleware.authenticationmiddleware', 'django.contrib.auth.middleware.sessionauthenticationmiddleware', 'django.contrib.messages.middleware.messagemiddleware', 'django.middleware.clickjacking.xframeoptionsmiddleware', ) from http://django-secure.readthedocs.org/en/latest/middleware.html , found using ...
Read more